- When pushed, it sends wireless signals to the CA -360 to let you know that someone is at the door - Weather resistant for easy outdoor mounting - Advanced Technology: 2.4 Ghz Smart-Code - Operating range: Up to 200ft,open space- actual distance varies according to house construction - Up to 4 Model CA-DB"s are supported - Battery type: 2032 type coin battery - Battery life: up to 10 months - Operating temperature: + 10 to +30\xb0C SICADB