Feature 1、 With 8 operation buttons, including 7 single-speed buttons and 1 total stop 2、 Up to 9 control points 3、 With battery voltage warning device, it can cut off the circuit when the voltage is insufficient. 4、 Safe button switch to prevent unauthorized use. 5、 Internal functions can be set by the computer interface Features: With 8 operation buttons, including 7 single-speed buttons and 1 total stop Up to 9 control points With battery voltage warning device, it can cut off the circuit when the voltage is insufficient. Safe button switch to prevent unauthorized use. Internal functions can be set by the computer interface Upper/lower, east/west, south/north can be set as whether they inhibit each other. Standby 1 button can be set to boot, speed up, stamp, normal and other functions. It is suitable for industrial control of single hook single speed/two mechanism inching hoist and less than 6 contacts Specification: Control distance: up to 100 meters Security code: more than 4.3 billion, factory never repeat Temperature: - 35℃to + 80℃(regardless of the cell temperature resistant) Protection level: IP65 Transmitter power supply: dc 3V (2 *AA batteries )(NOT Included) Parameters of remote control: Case: glass fiber reinforced nylon Protection level: IP65 Transmission power: < 10dBm Transmitter power supply: 2 AA batteries Security code: 32 bits (4.3 billion sets) Control distance: 100 meters Receiver parameters: Case: glass fiber reinforced nylon Protection level: IP65 Transmission power: 110dBm Security code: 32 bits (4.3 billion sets) Contact capacity: 8A hermetic relay input Receiver power supply: AC220V Weight: Approx.1682g/59.3oz Package list: 2 x transmitters (batteries NOT Included) 1 x receiver with a cable of 1m 1 x Qualification certificate, specification and wiring diagram 2 x Dust cover