Features: There are 8 operation keys, including seven single speed buttons and one total stop button. Number of control points reached 9. With battery voltage warning device, cut off the circuit when the voltage is insufficient. Safe key switch to prevent unauthorized use. Can be connected to the computer interface to set internal functions. The power button can be set to normal, self-locking and acceleration by the computer. Up/down, east/west, south/north can be set to whether or not they inhibit each other. Standby 1 button can be set to boot, speed up, stamp, normal and other functions. Suitable for single hook single speed, two mechanism jog hoist and industrial control below 6 contacts. Specification: Condition: 100% Brand New Weight: 1410g/49.7oz Control distance: up to 100 meters Security code: more than 4.3 billion, factory never repeat Protection Level: IP65 Operating Temperature: -35℃ to +80℃ (regardless of battery temperature) Transmitter power supply: DC 3V (2 alkaline no.5 batteries can be used for 4 months, NOT included .) Remote Control Parameters: Housing Material: Fiberglass Reinforced Nylon Protection Level: IP65 Transmit Power: <10dbm Transmitter Power: 2* AA Batteries ( NOT included ) Security Code: 32 Bits (4.3 Billion Groups) Control Distance: 100 Meters Receiver Parameters: Housing Material: Fiberglass Reinforced Nylon Protection Level: IP65 Transmitting Power: 110dbm Security Code: 32 Bits (4.3 Billion Groups) Electric Shock Capacity: 8A Fully Sealed Relay Input Receiver Power Supply: AC380V Package List: 1 * Transmitter 1 * Receiver 1 * 1m Connecting Cable 1 * Certification 1 * User Manual 1 * Wiring Diagram 1 * Dust Cover