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Wireless Dry Contact Sensor – Square


How it fits into the alarm platform: 

Connects wirelessly to the BarnTalk Gateway. The dry contact sensor should be placed within ~700 feet of the BarnTalk Gateway. On multi-barn sites, the dry contact sensor’s range can often extend across multiple buildings depending on proximity.

  • Can be used to monitor power, generators, controllers, feed lines, water pressure switches, and any equipment with a power relay.
  • Included Battery with 2-3 Year Life
  • IP67 Waterproof and Dustproof Rated
  • Tested for Maximum Durability in Harsh Conditions

BarnTalk is the only wireless barn alarm with certified multi-carrier connectivity built right into the system. Once you plug the BarnTalk Gateway into power, it connects to the strongest local cell tower, regardless of carrier, eliminating the need for a landline, WiFi, or hotspot. BarnTalk sends alarms via push notification, SMS text message or phone call based on the user’s preferences. For optimal alarms and monitoring, you’ll need a BarnTalk subscription. This subscription covers connectivity and data costs.

Monitor Generators, Controllers, Feed Lines, and More.

The BarnTalk Dry Contact Sensor wirelessly to the BarnTalk Gateway, which is the brains of the system. The gateway includes built-in cellular connectivity for rural areas. It works even where your phone can't connect!

Multi-directional arrow illustrating flexibility

Versatile Monitoring

Monitor power and other equipment in your barns, including generators, controllers, feed lines, water pressure switches, and more.

Icon of a check mark

Prevent Losses

Quickly respond to power outages or equipment issues with real-time alarms via text, call, or push notification from your BarnTalk app.

Gateway connect

Instantly Connects

The Gateway automatically connects to the strongest cell signal as soon as you plug it in. No landline, internet, or hotspot needed.

wireless dry contact sensor

Built for the Barn

The Wireless Dry Contact Sensor is waterproof and dustproof. It includes a replaceable battery with a 2-3 year lifespan.

BarnTalk dry contact sensor
New and Improved

Seamless Design

The new square design allows for more seamless installation and improved durability. Mount magnetically, with screws, or zip ties.

BarnTalk app

Remotely Monitor

With the BarnTalk app, you can monitor generators, controllers, power, feed lines, door switches, drop curtains, and more at your fingertips.

New and Improved

Discover the BarnTalk Wireless Dry Contact Sensor

By leveraging the versatility of the Wireless Dry Contact Sensor, and the ability to monitor your equipment in real-time, you can prevent losses at your site before they happen.

Details & Product Specifications




Power ON/OFF

Dry Contacts

DIN 1 Open/Closed; DIN 2 Open/Closed

Response Time

10 seconds

Power Supply

110-220 Supply Input 3.3 Volts Output (Comes with 2-prong plug-in for standard 110V outlet)

Battery Life

Up to 1 year on full charge

Working Environment

Temperature: 14 °F ~ 122 °F / -10 °C ~ 50 °C | Relative Humidity: 0 ~ 99.9% RH with no condensation


High Sensitivity 915 ISM frequency band LoRa Module

Protection Level


Shell Material

Nylon Plastic


Ø 3 x 6 1⁄4 inch / Ø72*280 mm


0.5 lbs / 252 g

Unsure? Talk to us about a site layout.

We can layout your site and make sure you have everything you need, and nothing you don't.

Wireless Dry Contact Sensor FAQs

You can connect up to 24 wireless dry contact sensors per Gateway.

Sensors should be placed within 700 ft. of the Gateway for best connection.

One Gateway can cover up to two barns or poultry houses. The Gateway should be centrally located on your site.

No. BarnTalk is simple enough for anyone to set up on their own. Save the money!

The sensors all have lithium-ion batteries inside of them with a 2-3 year battery life. The water meter has an 8+ year battery life.

Receive alarms via text message, phone call, or push notification from the app. All alarms can be acknowledged in the BarnTalk app by touching the “Attend to Alarm” button. You can also resolve alarms via the keypad on your phone.

Yes. If you don’t want to be alerted — including when you're washing out barns or moving out animals, you can toggle off your threshold settings or silence your Gateway's alarms altogether.

Yes. BarnTalk’s 24+ hour backup battery ensures you can receive alarms and view conditions even when you’ve lost power.

There is no limit to how many people you add to your CallTree. They just need to be a contact in your phone to add them in. The contacts you add will be notified in the order of the CallTree when barn conditions fall outside of the norm.