Specifications: Transmitter: Enclosure: Glass-Fiber PA Control distance is up to 100 meters Safety code: over 4.3 billions unique ID code available Temperature range: -35 ~ +75 Enclosure protection class: IP65 Frequency range optional:VHF:310-331 MHZ or UHF:425-446 MHZ Transmitter power: 3V DC (2 AA batteries last up to 4 months) Based on Microsoft Windows software for easy customize configuration. Structure: Glass-Fiber PA Dimension: 164x75x46mm Weight: 380g(without batteries) Application: Single-hook, single-speed electric hoist or hoist-type traffic and industrial remote control with less than 9 contacts Receiver: Power:DC 24-48V/110-480V Output contact capacity: 5A sealed relay output(AC 250V/10V relays, 5A fuse contacts) Receiver sensitivity: -110DBM Package includes: 1 Transmitter + 1 Receiver Features: 8 operation buttons, control points up to 8. With battery voltage warning system, circuit is cut off during low voltage. Safety key switch to prevent from unauthorized users. Up/down, east/west, north/south can be set as to mutual inhibition or not. Spare key can be set to start, acceleration, toggle switch, general or other functions. Application: Single-hook, single-speed electric hoist or hoist-type traffic and industrial remote control with less than 9 contacts