Autonomous keypad for control of a door and security system. Interior / exterior mounting. 1,000 codes. 2 relay outputs. Up to 2 slave keypads ACL701 or ACL771. IP65. Working temperature from -20ºC to 50ºC. Dimensions: 84 x 108 x 40 mm. Voltage: 12 / 24 VAC/VDC.