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Water Leak Sensor/Transmitter, RS485/Relay Output

$72.31
Water leak transmitter features RS485 or (NO) relay output, with a maximum detection distance of up to 2000 meters and an IP65 protection level. The water leak sensor supports DC 10-30V power supply, is easy to install and connect to existing systems, and is used in industrial, warehouse, and home locations.
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SKU: ATO-WLS-RSSJ
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Delivery date: 6-12 days

The water leakage sensor/transmitter is widely used in communication base stations, hotels, restaurants, server rooms, libraries, archives, warehouses, equipment cabinets, and other areas requiring water accumulation alarms. It features a unique AC detection technology that effectively prevents the sensitivity of the immersion electrodes from decreasing due to oxidation over prolonged use.

The RS485 sensor outputs in standard ModBus-RTU, with a maximum communication distance of 2000 meters, allowing for direct integration with on-site PLCs, industrial instruments, configuration screens, or configuration software. External leak electrodes can reach a maximum distance of 2600 meters, and it also supports leak ropes up to 2600 meters long. The device is housed in a high-protection waterproof shell, making it suitable for long-term use in humid and high-dust environments.

Specification

Model ATO-RS-SJ-N01-2 ATO-RS-SJ-R01-2
Power supply DC10-30V
Maximum power consumption 0.4W 1.2W
Testing objects Tap water and purified water
Working temperature -20℃~+60℃
Working humidity 0%RH~95%RH (non-condensing)  
Output signal RS485 output (ModBus-RTU protocol) Relay output (NO contact)
Relay with load capacity  -- 250VAC 1A/30VDC 1A
Installation method Wall-mounted
Detection distance 2000m
Protection level IP65


Dimension

Water leak sensor transmitter dimension

Wiring Instruction

Output signal RS485 output Relay output
Power supply Power supply positive (brown) (10~30V DC)
Power supply negative (black)
Output 485-A (yellow) Relay NO contact (white, green)
485-B (blue)

Note: When wiring the 485 signal line, please note that the A/B lines cannot be connected in reverse, and the addresses of multiple devices on the bus cannot conflict.

Applications

Water leak sensor transmitter application

Tips: Working principle of water leak sensor/transmitter

  • Detection Electrodes: The sensor is equipped with multiple electrodes. When water comes into contact with these electrodes, it completes an electrical circuit.
  • Current Variation: The conductivity of water causes a change in the current. The internal circuitry of the sensor monitors this variation to determine if a leak is present.
  • Signal Processing: Once moisture is detected, the sensor sends the signal to a built-in processing unit for analysis and verification.
  • Alarm and Output: If a water leak is confirmed, the sensor issues an alarm via RS485 or relay output, transmitting data to a monitoring system or PLC to ensure timely user intervention.
  • Remote Monitoring: Utilizing the ModBus-RTU protocol, the sensor can communicate with other devices for remote monitoring, allowing users to manage and track conditions in real time.
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