1. Functions & Features 1) Manual release 2) Machine core with compression spring, effectively avoids the accidents caused by spring breaking 3) Die-casting aluminum alloy motor, precision and good at thermal radiating 4) Motor cooling fan, solving the problem of heat-protection 5) Double safety limit switches (photoelectricity limit switch/motor memory sensor) 6) Reversing on obstacle 7) Auto-closing 8) Support the INFRARER PHTOCELL for anti-bumping function (optional) 9) Support the external and internal VEHICLE LOOP DETECTOR (optional) 10) Traffic light interface 11) Wire control (switch **)/ Remote control (418MHZ) 12) RS485 communication module (optional) 2. Technical Data Running time: 1s, 3s, 6s Boom type: straight Max Boom length: 3m, 4.5m, 6m Boom dimension (WxH): 45x80mm Boom weight: 3kg, 4.5kg, 6kg Voltage: 220V ± 10%,110V ± 10% Frequency: 50/60Hz Motor voltage: 220V Power: 120W Working temperature: -40~75°c Protection grade: IP44