ITEM NAME:Dc 12V Nc No Square, Contact Sensor Door Exit Release Button Switch With Le G4C7 Dc 12V Nc No Square, Contact Sensor Door Exit Release Button Switch With Le G4C7 Single Contact to exit Long mechanical life more than 500000 times Square brevity design Product Reference: ACA-EB-TB1-SQ Power Input : DC 12V Suitable Humidity : Less than 95% Output Contact : NO / NC / COM Operating Temperature : -20 °C ~ 55 °C LED Indicator : Blue : Standby Green : Triggered Dimensions : approx. 86 (W) x 86 (H) x 21 (D) mm approx. 3.4 (W) x 3.4 (H) x 0.8 (D) inch colour:Black + silver Material:stainless steel Package Contents: 1 * Exit Release Button Switch