Wireless LoRa Water Tank Level High/Low Alarm Remote Control Box

1. Why You Need It

Remote water tanks and reservoirs often sit far from the control room, making wired level monitoring costly and difficult. This wireless LoRa level alarm box reads a standard 4-20 mA level transmitter and sends high/low alarm status over LoRa wireless — no long cable runs, no repeaters. With flexible power options (battery, 12V, 24V or 220V) and a wide operating range, it gives operators simple, reliable remote water level alarming for tanks, reservoirs and pumping stations.

2. Working Principle

The control box connects to a two-wire 4-20 mA level transmitter installed in the tank. It monitors the level signal, compares it against set high and low thresholds, and transmits alarm status wirelessly using LoRa — a long-range, low-power radio technology that carries data over kilometers with minimal power. Battery operation (ES26500 3.6V, with 12V/24V/220V options) makes the unit suitable for sites without mains power.

3. Key Advantages

• LoRa long-range wireless transmission
• High/low level alarm control
• 4-20 mA two-wire sensor input
• Battery power (ES26500 3.6V)
• 12V / 24V / 220V supply options
• -20 to +55 °C operating range
• Low-power remote operation
• Suitable for remote water tanks
• No long cable runs needed
• Simple threshold alarming

Common Pain Points & Solutions

Application Cases

Technical Specifications

FAQ

Q: What is a wireless LoRa level alarm box?

A wireless LoRa level alarm box reads a 4-20 mA level transmitter and sends high/low level alarm status over LoRa — a long-range, low-power wireless technology. It lets operators monitor remote water tanks and reservoirs without running long cables, alerting them when the level is too high or too low.

Q: How far can LoRa transmit?

LoRa provides long-range communication, typically several kilometers in open areas and hundreds of meters in urban or obstructed environments. This makes it ideal for remote tanks, reservoirs and pumping stations that are far from the control room.

Q: What power supply does it need?

It can operate on a 3.6V ES26500 battery for off-grid sites, with 12V, 24V and 220V AC options for sites with power. This flexibility allows the alarm box to be installed almost anywhere, including locations without mains power.

Q: What sensor does it work with?

It connects to a standard two-wire 4-20 mA level transmitter installed in the tank. This universal input means it works with most common level transmitters, from ultrasonic to hydrostatic types.

Q: How do high and low alarms work?

The operator sets high and low level thresholds. When the 4-20 mA signal crosses either threshold, the box transmits an alarm wirelessly. This provides early warning of overflow (high) or empty/dry-run (low) conditions.

Q: Is it suitable for outdoor use?

The box operates from -20 to +55 °C and up to 60% relative humidity, covering most outdoor and industrial environments. It should be installed in a protected enclosure for very harsh weather.

Q: Why use LoRa instead of wired monitoring?

Wired monitoring of remote tanks requires long, costly cable runs and is impractical across long distances or difficult terrain. LoRa eliminates the cabling, reduces installation cost and provides reliable long-range wireless status.

Q: Can it run without mains power?

Yes. The battery-powered option (ES26500 3.6V) allows the unit to operate completely off-grid, which is essential for remote agricultural, municipal and industrial tanks without nearby power.

Q: What is the response of the alarm?

The box continuously monitors the 4-20 mA level signal and transmits alarm status in real time when thresholds are crossed. This provides timely alerts for pump control and overflow prevention.

Q: Where is it used?

It is used for remote reservoirs, elevated and municipal water tanks, irrigation tanks and industrial cooling water tanks. It provides low-cost, wireless high/low level alarming for any remote water storage application.