Feature: [Material]: Glass-Fiber PA. IP65 Waterproof: Suitable for use in harsh environments such as high oil pollution, high humidity, and high dust conditions. [Features]: Equipped with 8 function buttons; button functions can be programmed via computer software. [Control Distance]: Approx. 100m strong signal penetrability without precise aiming. Up/down, east/west, north/south directions can be programmed for interlock or non-interlock, toggle, and normal operations. [Safety]: Remote controller includes a safety magnetic key switch for emergency use. Features a battery voltage alarm that automatically cuts off the circuit when voltage is low. [Application]: Designed for use with bridge cranes, overhead cranes, chain hoists, monorails, concrete pump trucks, mobile lifting equipment, and tower cranes. Specifications: Transmitter Number of function buttons: 6 one-step buttons (Up/Down, East/West, South/North) Other buttons: 1 Stop button, 1 Start button Material: Glass-Fiber PA Dimensions: 164 x 75 x 46mm Weight: 315g (without batteries) Protection Class: IP65 Frequency range VHF: 310–331MHz; UHF: 425–446MHz Transmitter power: ≤10dBm Safety codes: 32 bits (4.3 billion combinations) Temperature range: -40°C to +85°C (-40°F to 185°F) Control distance: Approx. 100m Receiver Receiver power supply: AC/DC 12–24V, AC/DC 24–95V, AC 36V, AC 220V, AC 380V Material: Glass-Fiber PA Dimensions: 205 x 86 x 80mm (8.1 x 3.4 x 3.1 in.) Weight: 620g Protection Class: IP65 Temperature range: -40°C to +85°C (-40°F to 185°F) Frequency range VHF: 310–331MHz; UHF: 425–446MHz Receiver sensitivity: -110dBm Cable length: 1.65 meters Safety codes: 32 bits (4.3 billion combinations) Control distance: Approx. 100m General Features: Remote Control Model: F21-TX / F21-RX Material: Glass-Fiber PA Protection Level: IP65 Frequency range options: VHF: 310–331 MHz Transmitter power: ≤10dBm Transmitter power supply: Two AA batteries (batteries not included) Safety code: 32 bits (4.3 billion combinations) Temperature range: -40°C to +85°C Control distance: Approx. 100m Transmitter model: F21-TX Receiver model: F21-RXC Receiver power supply options: AC/DC 12–24V, AC/DC 24–95V, AC 36V, AC 220V, AC 380V Receiver sensitivity: -110dBm Output contactor capacity: 8A sealed relay output Warning device: Power supply is cut off when battery power is low Note: The remote control must be used with a contactor. It cannot be directly connected to a power source. Direct connection may damage the motherboard. Package Included: 1 x Transmitter 1 x Receiver 1 x Dust Bag