General Description: The Ahlsen F21-e1b remote control is an industrial device designed for the remote control of equipment such as hoists and elevators. Made from high-quality materials, it offers great practicality and a wide range of applications. With a 12V-24V operating range, it is equipped with 8 function buttons, including 6 single-speed buttons, a start button, and a stop button. In addition, it features a safety key switch to prevent unauthorized use. Technical Specifications Main Material: Fiberglass Reinforced Nylon Color: Orange and Black Operating Voltage: 12V-24V Protection Level: IP65 Transmitting Power: 10 dBm Power Supply: 2 AA Batteries (not included) Code: 32-bit (4.3 billion sets) Control Distance: Up to 100 meters Transmitter Size: 190 * 88 mm (7.5 * 3.5 inches) Transmitter Weight: 655 g (1.4 lbs) Package Size: 310 * 210 * 170 mm (12.2 * 8.3 * 6.7 inches) Package Weight: 1259 g (2.8 lbs) Compatibility and Accessories Package Includes: 1 Transmitter, 1 Receiver, 1 Carrying Case Protection, 2 fuses. Usage: The remote control allows for unobstructed 360-degree control thanks to its 5.0 remote control system, offering strong penetration without the need for aiming. It is ideal for use in various environments due to its water, dust, and shock resistance. Other information: Low battery warning device to automatically shut down the circuit. The transmitter and receiver boards are equipped with crystal oscillators for stable performance. External antennas should avoid blocking body signals.