SensorWorks WSMS-125 Manhole Sensor

Manhole Sensor
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  • Device Type:
  • Application:
  • Technology:
  • Sensor Type:
  • Power: 2.2 V to 3.0 V


  • Sensor to detect if manhole cover is being tampered or tilted up
  • Moving Detection by G-sensor
  • High sensitivity down to –148 dBm
  • Option support wide frequency range from 862 MHz to 928 MHz
  • Activation switches via magnet
  • 3-year normal operation with low battery alert
  • IP68 waterproof

Gemtek has been instrumental in the development of LPWAN system solutions, and is an early provider of LoRaWAN protocol-based, end-to-end LPWAN solutions. The LoRaWAN technology is designed to connect low-cost, battery-operated sensors over long distances in harsh environments that were previously too challenging or cost-prohibitive to connect. Because of its long range, high penetration, and high sensitivity capabilities, it is a much more cost-effective way for service providers to deploy LoRaWAN network for sensor applications in vertical market domain.

This Manhole Sensor is designed to provide tampering monitoring of manhole covers. Manhole covers have a lot of theft issues, both for the cover's metal content and the valuable assets down below, like fiber cables, etc. This sensor detects if the manhole cover is being tilted or lifted and will send out alerts to the operation center. Prior to operation, the sensor is activated via magnet to preserve battery during transport and storage. The battery is designed for more than 3 years operation based on nominal usages.

More Information
Model Number WSMS-125
Brand SensorWorks
Dimensions 142 mm × 113 mm × 42.5 mm
Temperature –40 ºC to 70 ºC
Product Type 0
Application 0
Technology 0
Sensor Type 0
Power 2.2 V to 3.0 V
Battery Life 2× non-rechargeable Li-ion battery 2400 mAh
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