The CL800-PB series is a surface mount push button requesting an output request, operates independently or can also be connected through a controller to provide output from a secure area (push button input). It includes buzzer and a double status LED. It can work in pulse mode of 3, 5, 10 sec or lock. It can be used with all standalone ACL87xsu / FL-Bx biometric readers. Dimensions: 92x51x27mm. Power 9 to 14 VDC.