Specifications: Condition: 100% Brand New and High Quality Color: Black Material: Plastic Size: Approx. 6.8cm x 4cm x 1.6cm ( Length*width*Height ) Work Voltage: DC 12V Work Current:≤12mA Transmitted Power:≥10mW Work Frequency: 433 MHz Transmitting Distance: within 80M ( open space) Battery: 2pcs CR2016 Button Batteries (Not Included) How To Use: 1. Erase the code 1) Press button A and B at the same time until LED flash 2) Release button B and keep pressing button A , then press button B 3 times, LED flash fast indicate succeed to clean code (can release button A now) 2. Duplicating 1) Put duplicator aside of original transmitter , as close as possible 2) Press and hold button A of original transmitter and button A of duplicator at the same time, until duplicator's LED flash and keep lighting. 3) Release both buttons, finish code copy , copy other button in the same way. 3. Resume Press and hold button C and D for 3 seconds, the LED flash , OK all buttons return back to the latest copy codes. Package Included: 1 X 4-Channel Remote Control (Battery is not included) Please Note: 1. Please check the size measurement chart carefully before making payment. 2. Please allow 0.5-1 inch difference due to manual measurement.(1 inch=2.54cm) 3. The color of the actual items may slightly different from the listing images due to different computer screen, thanks for your understanding. 4. Instruction is not included. The remote control is made of high-quality materials and is durable enough for everyday use. Simple pairing with remote originals. This is a fixed frequency remote cloner that replicates 99.99% of common fixed and learned remotes. Helps you control your gadgets, car, home and garage. RT433 wireless remote control is suitable for cars, garage doors, doors, sunroofs, car/motorcycle alarms, home security products, wireless remote control products, home automation appliances/lamps, industrial control products, curtains, etc. The RT433 Remote Control Duplicator will give you some backup remotes from the original cloned remotes. Exquisite and beautiful appearance, 4 control buttons, zero lag, zero delay, fast response. A remote control is a powerful, economical and reliable device. Using radio frequency technology, the transmission distance is long, the transmission sensitivity is high, and the signal is barrier-free.