About LED Up/Down Counter Perfect counter for production, golf, visitors, event or lap count. ie. counting the number of people passing through a turnstile or the number of boxes moving along a conveyor belt. Our counter accept pulses from switches, relays, open-collector outputs or push button. Function: Counter will up-count or down-count by 1 when a customer-supplied on/off button is activated. 2. Counter will increase/decrease by 1 when a customer press up/down button on the wireless remote controller or button. 3. Reset to zero through button or remote controller 4. Up/Down count by 1 from a specific value. 5. Set a desire seconds then start countdown or count up by the wireless remote or buttons. Advantage: - With high speed IC - Big red number in 3" high - Good stability, strong Anti-interference. Specifications: Digital height: 3" Red LED Count up/down way : switch box & wireless remote Display range:0-999 Overall Dimension: 10''x4.8''x1.6'' AC/DC power adaptor into standard 120 VAC outlet Mounting bracket included for wall mount Packaging include LED Counter Switch Box 1x 7feet signal cable AC/DC adapter Brackets User Manual