Open/Close Dry Contact Sensor

made by Dragino
NB-IoTLoRaWAN

“Hook it up to any dry contact and start tracking events”

Image link
Use Cases
Open/Close detection
Pulse meter detection
Dry Contact detection
Key features
NB-IoT and LoRaWAN connectivity
IP66 rating
External antenna
Internal lithium battery with up to 5 years of battery life