Section 1: Safety & Installation Warnings
⚠ GENERAL POWER WARNINGS
- Use Approved Power Sources Only: Only power the WellMAV using the factory-bundled USB AC adapter and cable, or a certified UL/CE-compliant 5V USB Power Delivery (PD) / Quick Charge (QC) adapter. Supplying incorrect or excessive voltages constitutes product misuse.
- Overvoltage Hazard: Do not connect the WellMAV USB-C interface to power supplies, solar inverters, or battery arrays supplying over 5.5V DC. Doing so will cause immediate thermal failure of internal components and voids hardware coverage.
- Pump Interface Input Restrictions: The 3.5mm jack is exclusively engineered for a low-voltage AC sensor signal. NEVER plug headphones, auxiliary audio lines, or live grid power directly into this receptacle.
⚡ DANGER: HIGH-VOLTAGE RISK OF ELECTRICAL SHOCK OR FIRE
- Isolate Main Power: Before routing or connecting pump floats, pressure switches, or any external wiring to the terminal blocks, ensure that the main circuit breaker controlling those high-voltage lines is locked out and turned completely OFF. Verify lines are dead with a non-contact voltage tester before proceeding.
- Professional Installation Required: Because this device interfaces with hazardous commercial voltages (120V/230V AC) via direct terminal connections and external current clamp sensors, all field installation and physical mounting inside electrical panels must be performed exclusively by a licensed electrician.
- Wire Insulation Rating: Any user-supplied wiring routed into the WellMAV enclosure must feature an insulation jacket rated for the highest voltage present in the system (minimum 300V insulation rating). Never use uninsulated wiring, low-voltage doorbell wires, or thermostat wires for 120V/230V connections.
- Stranded Wire Fraying Hazard: If using stranded wiring, verify that no loose, stray copper strands protrude outside the terminal block after tightening the screw. Stray strands contacting adjacent circuitry or the device chassis can cause arcing, electrical fires, or permanent equipment failure.
- Enclosure and Grounding Integrity: Ensure all connected external metal housings (such as pressure switch boxes or conduits) are correctly grounded back to your main electrical panel according to code.
- 3-Phase Voltage Limitation: The WellMAV internal monitoring circuits are designed for a maximum single-phase potential of 230V AC nominal. Connecting line-to-line phase lines of a 3-phase industrial power feed directly to the terminal inputs will cause immediate catastrophic hardware destruction, electrical arcing, and severe fire risk.
- Enclosure Wireless Requirements (Outdoor/Damp Locations): If installing the WellMAV in an outdoor environment, damp pump house, or subterranean pit, the device must be installed inside a sealed, weatherproof non-metallic enclosure (such as polycarbonate, fiberglass, or ABS plastic) rated for NEMA 4X or IP66/IP67. DO NOT use a metal electrical box. Metal housings will act as an RF shield and completely block the device's internal cellular and GPS/GNSS IoT antennas.
⚠️ High Voltage Safety Symbols and Operational Warnings
The following standardized symbols are utilized on the equipment housing and within this documentation to alert operators to critical electrical safety metrics:
⚠ WARNING (ISO 7000-0434B / IEC 61010-1): Read all instructions prior to field installation. Risk of severe property damage, equipment failure, or physical harm if constraints are violated.
⚡ HAZARDOUS LIVE VOLTAGE (IEC 60417-5036): The switch input terminals carry 120V AC or 230V AC mains electricity. Turn off all supplying breakers before handling terminal connections.
Strict UL 61010-1 Compliance Mandates:
- Qualified Personnel Only: Field wiring connection to the 120V/230V AC switch inputs must be performed exclusively by a licensed, certified electrician in compliance with standard electrical codes.
- No Internal Serviceable Parts: Enclosure disassembly is strictly prohibited. Internal 1A protective fuses are integrated into the primary circuitry and must only be handled or replaced via manufacturer depot repair.
- Wire Insulation Rating: All field loop wiring terminated into the device must carry an insulation breakdown voltage rating of at least 300V minimum (600V recommended) to maintain basic touch-safe safety parameters.
Section 2: Electrical Specifications & Power Requirements
To ensure safe operation, optimal performance, and to maintain your hardware protection, the WellMAV™ system must only be installed and operated within the precise electrical, mechanical, and environmental boundaries outlined below:
System Power Inputs
| Parameter | Required Specification |
|---|---|
| Main Input Voltage | 5.0V DC (± 5%) |
| Minimum Input Current Rating | 1.0A (1000mA) |
| Power Interface | USB Type-C |
| Power Source Requirement | Factory-bundled USB AC adapter or a certified USB Power Delivery (PD) / Quick Charge (QC) power brick compliant with UL/CE safety standards. |
Device Enclosure
| Parameter | Required Specification |
|---|---|
| Mounting Tab Fastener Size | M4 or #8 size screw recommended (designed for 4mm mounting hole). |
| Mounting Tab Tightening Torque | 0.5 N·m (4.43 in-lbs) maximum. Do not exceed to avoid cracking the tabs. Hand-tighten only; do not use power tools. |
| Mounting Requirements | A flat washer must be used under the screw head to distribute clamping force. The flat washer must have a maximum outer diameter (OD) of 10mm. Mount only to flat, uniform surfaces. |
| Operating Temperature Range | -4°F to 120°F (-20°C to 49°C). Do not exceed 120°F (49°C) to prevent internal device damage and thermal softening of the enclosure. |
| Storage/Environmental Restrictions | Store below 140°F (60°C). Avoid prolonged exposure to direct sunlight or enclosed high-heat environments (e.g., parked vehicles) to prevent structural warping. |
| Overvoltage Category / Altitude | Overvoltage Category II (OVC II). Maximum operational altitude: 2,000 meters (6,560 feet). |
| Environmental Rating / Pollution Degree | Designed for Indoor Use Only. Pollution Degree 2 environment. |
| Equipment Maintenance | Disconnect all external 120V/230V AC power sources before maintenance. Clean exterior enclosure with a dry cloth only. Do not use chemical solvents or submerge the unit. |
| Protection Impairment Warning | If the equipment is used in a manner not specified by the manufacturer, the protection provided by the equipment may be impaired. |
Pump Interface Inputs
| Parameter | Required Specification |
|---|---|
| Pump Input Port | 3.5mm three-core jack. Acceptable input signal: 0 to 1.0V AC max line-level output from an unaffiliated, non-invasive, split-core AC Current Transformer (CT) sensor (20A/1V or 100A/1V ratio equivalents). |
Switch Interface Inputs
| Parameter | Required Specification |
|---|---|
| High-Voltage Switch Terminal Blocks | 5.00mm pitch screw terminals. Designed for single-phase 120V AC or 230V AC
nominal (Dual Voltage) configurations, 60Hz. Maximum working voltage must not exceed
250V AC. 3-Phase Systems: The terminal blocks are rated for single-phase voltage monitoring only. For 3-phase pump installations, the terminals must only be wired to monitor a single 120V/230V leg or the pilot control circuit/contactor coil. Do not connect multi-phase line-to-line voltages (e.g., 480V AC) directly to these terminals. |
| Supported Input Line Targets | Dry-contact or powered pump float switches, and standard well-pump pressure switches/contactor coils. |
| Field-Wiring Gauge Compatibility |
Solid Core: 14 AWG to 18 AWG copper wire. Stranded Wire: 14 AWG to 18 AWG copper wire. Note: The use of insulated wire ferrules is strongly recommended for stranded wire to prevent wire fraying and potential terminal short circuits. |
| Terminal Screw Size | M2.5 with straight slot head. |
| Terminal Screw Tightening Torque | 0.4 N·m (3.54 in-lbs) nominal max. Do not exceed 0.4 N·m to avoid stripping internal clamp components. |
| Recommended Wire Strip Length | 6.0 mm to 7.0 mm (approx. 0.25 inches). If utilizing a stranded wire ferrule, strip to match the metal barrel length. Ensure no bare conductor remains exposed outside the housing body. |
| Overcurrent Protection | Each terminal features an internal 1.0 A fuse. Continuous input current must not exceed 1.0 A. Exceeding this limit will permanently open the internal fuse. These are not user-serviceable. |
Recommended Wire Ferrule Tools (For Stranded Field-Wiring Only)
To prevent individual wire strands from breaking, fraying, or bridging across adjacent pins, installers must crimp an insulated bootlace ferrule onto any stranded conductor prior to insertion into the high-voltage terminal block. Use the following DIN 46228-4 standards:
| Wire Gauge | Cross-Section (mm²) | Standard DIN Color | Standard Pin Length |
|---|---|---|---|
| 14 AWG | 2.50 mm² | Blue | 8 mm (0.31 in) |
| 16 AWG | 1.50 mm² | Black | 8 mm (0.31 in) |
| 18 AWG | 0.75 mm² | White | 8 mm (0.31 in) |
Section 3: Frequently Asked Questions (FAQ)
Q: Can I extend the wiring on my third-party current transformer (CT) sensor?
A: We strongly discourage extending the sensor wire. If your target installation layout requires an extension, you may use a high-quality, heavily shielded 3.5mm stereo extension cable up to a strict maximum of 10 feet (3 meters).
- The Risk: Extending analog sensor lines introduces electromagnetic noise from nearby high-voltage pump motors, which will distort your data streams and cause inaccurate current readings.
- Better Alternative: Instead of extending the low-voltage sensor wire, mount the WellMAV unit close to your electrical breaker panel and run longer high-voltage field wiring (14–18 AWG) out to your remote float or pressure switches.
- Warranty Note: Third-party CT sensors are not covered by the WellMAV Limited Warranty. Furthermore, any damage to the WellMAV main unit caused by improper wire modification, splicing, or custom extensions is explicitly excluded from your warranty coverage.
Q: What happens to the WellMAV if my pump float or pressure switch physically breaks?
A: The WellMAV is a monitoring and diagnostic interface; it reads the electrical state (open or closed) of your external switches. If a switch mechanically fails, jams with silt, or leaks water internally, the WellMAV will simply report the incorrect state or alert you to an anomalous timing reading.
- Warranty Note: Because IoTDevTek, LLC does not manufacture or supply your external plumbing switches, their mechanical or electrical failure is entirely outside your product warranty. Damage to your well pump or home resulting from a stuck third-party float switch is not covered.
Q: The terminal block screws won't tighten anymore. Is this covered under warranty?
A: It depends on the root cause of the failure:
- If the terminal block threads strip during your initial out-of-the-box installation while using standard hand tools under our recommended torque limits (3.54 in-lbs / 0.4 N·m), contact customer support immediately for an RMA evaluation.
- If the hardware is stripped because an installer used a high-torque power drill, impact driver, or over-tightened the terminals beyond the 0.4 N·m (3.54 in-lbs) limit, the damage constitutes product abuse and is not covered under your limited warranty.
Q: Can I use this device outside or in a damp pump house?
A: The WellMAV main unit must be protected from environmental moisture. If installing it in an outdoor location, damp pump house, or utility pit, you must mount the unit inside a weatherproof, non-metallic NEMA 4X / IP66 rated plastic enclosure.
- Why Plastic is Required: The WellMAV relies on high-frequency cellular and GPS/GNSS connections to transmit tracking data. Installing the device inside a standard steel or aluminum electrical junction box will permanently degrade or completely block the wireless signal.
- Installation Pro-Tip: Liquid-tight plastic strain-relief grips (cable glands) should be used where the sensor wires and high-voltage wiring enter the plastic enclosure to preserve its weatherproof seal.
- Warranty Note: Direct exposure to rain, heavy condensation, water runoff, or moisture damage resulting from utilizing an unsealed or improper enclosure will void your 1-Year Limited Warranty.
Section 4: 1-Year Limited Warranty
LIMITED WARRANTY (UNITED STATES ONLY)
What is Covered and For How Long?
IoTDevTek, LLC (“Company”) warrants to the original retail purchaser in the United
States that the WellMAV™ electronic device, along with its factory-bundled charging
cable and power adapter (collectively, the “Product”), is free from defects in materials and workmanship
under normal use for a period of one (1) year from the date of original retail
purchase.
What is Not Covered? (Exclusions)
This Limited Warranty does not cover:
- Cosmetic damage, including scratches, dents, scuffs, and broken plastic casing or ports.
- Damage caused by accident, abuse, misuse, liquid submersion, fire, lightning strikes, or other external forces.
- Damage caused by operating the Product outside the user manual's permitted or intended uses.
- Consumable parts, such as batteries or internal protective coatings, that naturally diminish over time, unless failure occurred due to a defect in materials or workmanship.
- Products purchased, shipped, or operated outside of the United States.
- Third-Party or Optional Accessories: Any optional accessories sold separately or offered as add-ons—including but not limited to user-supplied field wiring, conduits, external current transformer (CT) sensors, split-core sensors, or third-party plugs—are explicitly excluded from this warranty. The Company does not warrant the operation, accuracy, or performance of independent components manufactured by third parties.
- Improper Installation and Faulty Wiring: Any physical, mechanical, thermal, or electrical damage to the WellMAV device, associated components, or connected property caused by improper field installation, overtightening of mounting fasteners, failure to use flat washers, mounting on non-uniform surfaces, incorrect terminal wiring connections, loose terminal screws, inadequate wire insulation, line-voltage spikes, exposure to temperatures exceeding specified operating or storage limits, or failure to comply with federal, state, or local electrical codes is explicitly excluded from coverage.
- Internal Fuses: Internal fuses are not user-serviceable. Enclosure disassembly or blown fuses due to external overcurrent wiring errors are not covered under this warranty.
- Note on Repairs: Servicing this product by an independent repair shop or performing DIY repairs will not void this warranty. However, any damage to the product caused during an unauthorized repair attempt is explicitly excluded from coverage.
What Will the Company Do to Correct Problems? (Remedies)
If a valid claim is received within the Warranty Period, the Company will, at its sole discretion,
either:
- Repair the hardware defect using new or refurbished replacement parts.
- Exchange the Product or factory-bundled accessory with a new unit or a refurbished unit of equal or greater value.
How Do You Get Service? (Claim Process)
To obtain warranty service, you must contact our Customer Support team at
support@iotdevtek.com to obtain a Return Merchandise
Authorization (RMA) number. You are responsible for safely packaging the Product and paying all
shipping and insurance costs associated with sending the device to our designated repair center. The
Company will cover the return shipping costs for repaired or replaced items back to you within the
United States.
Limitation of Liability & Implied Warranties
To the extent permitted by law, this warranty and the remedies
set forth are exclusive and in lieu of all other warranties, remedies, and conditions. The company
limits the duration of any statutory or implied warranties, including warranties of merchantability
and fitness for a particular purpose, to the one-year duration of this express warranty. The company
is not responsible for direct, special, incidental, or consequential damages resulting from any
breach of warranty or condition.
How State Law Applies
Some states do not allow limitations on how long an implied warranty lasts or the exclusion or
limitation of incidental or consequential damages, so the above limitations may not apply to you.
This warranty gives you specific legal rights, and you may also have other rights which vary from
state to state.
Section 5: Regulatory & Compliance Information
FCC Compliance Statement (United States Only)
FCC Part 15 Class B Notice
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two
conditions: (1) this device may not cause harmful interference, and (2) this device must accept any
interference received, including interference that may cause undesired operation.
Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential or light-industrial installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help.
Modifications Warning
Changes or modifications to this product not expressly approved by IoTDevTek, LLC could
void the user’s authority to operate the equipment under FCC regulations.
RF Exposure Statement
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. To
comply with FCC RF exposure compliance requirements, the antenna used for this transmitter must be
installed to provide a separation distance of at least 20 cm (approx. 8 inches) from
all persons and must not be co-located or operating in conjunction with any other antenna or
transmitter.
Contains Transmitter Components
The WellMAV™ device utilizes an integrated, pre-certified cellular module.
Contains FCC ID: 2ANPO00NRF9151