Wireless dry contact sensors can be used to detect contact between two wired contact points. This sensor can be used with an external mechanical switch or a contact plate to alert the user via SMS text and/or email when the contacts touch or a switch is triggered.
 
Lead Wire Length:  3 ft. ( 36 in. )
Detection Wires:  High Impedance
Weight:  0.7 oz.
Security: Encrypt-RF® (256-bit key exchange and AES-128 CTR)
Battery Type: Replaceable 3.0V (CR2032) Coin Cell Battery
Dimension: 2.0 in x 1.125 in x 0.875 in
Max Operating Temperature: -7°C to +60°C ( 20°F to +140°F )
Optimal Battery Operating Temperature (Coin Cell):  +10°C to +50°C ( +50°F to +122°F )
Supply Voltage: 2.0 - 3.8 VDC
Battery Life: At 1-hour heartbeat setting, coin cell battery will last up to 4 years. **
Enclosure Material:  ABS
Operating Frequency: 900 MHz Operating Frequency
Certifications: Complies with Part 15 of the FCC Rules. (FCC ID: ZTL-G2SC1)
                      Complies with Industry Canada standards. (IC: 9794A-G2SC1)
Device Range: Device Range Up to 1,200 ft. non-line-of-sight, wireless device range*
Security: Encrypt-RF® (Diffie-Hellman Key Exchange + AES-128 CBC)