The earthbound mode opens the gate about 1-5ft, allowing people to pass through without the need of opening it completely. ¦ It 2 of import safety systems : a -RRB- the gate automatically stops or reverses if it encounters an obstruction while sliding b -RRB- the RF hopping code technology prevents your distant code from being accessed by others. ¦ With the auto-close option, you can the gate to hot 12, 24, or 36 seconds after it opens. ¦ You can up to 23 supernumerary remotes that can controller this system. In case of a power outage or an emergency you may also use blue-collar release Francis Scott Key. Package : blue-collar 1x Sliding Gate Opener Unit 1x 20ft of Chain -LRB- Can be snag into 2x 10ft Chains -RRB- 2x distant Controls 2x blue-collar Release Keys Mounting Hardware Installation Parts Specifications : Maximum Gate Weight : 1400 lbs Maximum Gate Length : 40ft -LRB- includes 20ft of chain -RRB- Power Supply : 110V AC, 60Hz Gate Move Speed : 43ft/min -LRB- 8.5 '' / moment -RRB- Motor Speed : 55RPM Output Power : 200W distant Control Range : 100ft -LRB- Frequency : 433.92 MHz -RRB- Output Shaft Height : 48 mm Max. Gate : 1400 lbs Output Torque : 16Nm Limit Switch : magnetized Limit Switch Noise : Max # of Remotes 25 Duty Cycle : S2, 15 Minutes Operating Temperature : -4 °F ~ +122 °F -LRB- -20 °C ~ +50 °C -RRB- .