industrial dry contact sensor

Wireless Dry Contact Sensors

Lose contact? Know instantly.

Monnit Wireless Dry Contact Sensors detect if contact is made or broken between two wired points.

This sensor remotely monitors production line operation, tracks when a forklift’s seat is occupied, or alerts you if a gate was left open. Power over Ethernet, intrinsically safe IECEX-certified, and wireless sensor types support small business, enterprise, and industrial firms.

How Dry Contact Sensors Work

Within 15 minutes, the sensor can be mounted and wired to two endpoints (such as existing switches or contact plates). Be alerted via email, text, or call if a contact is broken (indicating that the points are no longer touching) or if the two points make contact when they shouldn’t be.

Retrofit one of the sensors below and bring new life (and intelligence) to equipment. Start remotely monitoring product volume, mechanical actuation, equipment use, and physical access security today. For example, you can use the sensor to monitor a line valve opening or closing, a backup generator powering up, and a fluctuating propane tank level.

WARNING: Use caution when interfacing with ALTA Dry Contact Sensors. Any external AC or DC Voltages WILL DAMAGE the electronics of the wireless sensor. Monnit is not responsible for troubleshooting, replacing, or reimbursing damages incurred by disregarding this warning.

Wireless Dry Contact Sensor - AA Battery Powered
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Enterprise Wireless

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Wireless Dry Contact Sensor - Coin Cell Powered
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Commercial Wireless

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Industrial Wireless Dry Contact Sensor
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Industrial Wireless

  • Industrial Battery Powered
  • Up to 7 Years Battery Life
  • Specifications

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IECEx Wireless Dry Contact Sensor
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IECEx Wireless

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PoE Sensors
PoE•X Dry Contact Sensor
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PoE•X - Power over Ethernet

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WiFi Sensors
Wi-Fi Dry Contact Sensor
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MoWi - Wi-Fi

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Which Sensor is Right For Me?

  • Enterprise AA-battery powered: Our most popular type is ideal for typical commercial & enterprise environments, such as server rooms. A 1,200+ ft. range readily covers most facilities.
  • CC-battery powered: Compact sensor is great for space-restricted areas such as control cabinets or cold storage.
  • Industrial: Sensor's weatherproof, NEMA-rated enclosure withstands demanding indoor/outdoor use, e.g., warehouses & production facilities.
  • PoE•X: Power over Ethernet sensors integrate with a building's PoE network; it can also be used with a standard Ethernet infrastructure & powered via an optional AC adapter.
  • MoWi: This discreet sensor uses your own Wi-Fi for networking and data transmission—popular for smaller businesses and facilities.
Still not sure which sensor type to choose? Visit our Sensor Comparison page.



1200+ ft. Range
Up to 12 Years of Battery Life
Automated Data Logging


Unbeatable Range Eases Networking
Dependable, Worry-free Operation
Streamlined Compliance & Data Analysis

How Monnit Sensors Work

how Monnit remote monitoring works

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