This Universal Remote Control Duplicator is so easy and convenient to use. Fixed frequency (433mhz) for copying 99.99% common fixed and learning code remote controls. Face to face copying the functions of your original remote by this 4 channel RF duplicator with code learning functions, you will always have a backup. •Face to face copying the functions of your original remote by this 4 channel RF duplicator with code learning functions, you will always have a backup •Fixed frequency (433mhz) for copying 99.99% common fixed and learning code remote controls •Humanized design: Button slide cover to protect buttons from accidental unplanned operation •Mini in size and light in weight: Handy key chain size can attache to your car keys, no more unwanted bulkiness •Application: Vehicle central locking systems, garage doors, electronic doors, car sunroofs, heating systems, etc •Approach to clearing old codes: Long press the upper two (A & B) buttons to clear old codes(The LED indicator will flash three times, followed by a continuous fast blinking, which is the sign of cleared state.) •Approach to duplicating: Place them side by side(as close as possible), then press both one key of your old remote and the to-be-matched key on this remote simultaneously. The LED indicator will flash about three times, followed by a continuous fast blinking. Learning process done. Other keys accordingly •Approach to recovering: Press the lower two buttons (C & D) for about 3 seconds till the light is on and flicker. (Or you can delete the codes and repeat the learning process.） •Approach to test if the old codes are totally cleared: Press any key on the remote duplicator, if the LED indicator blinks instead of being on, codes cleared. Otherwise, undone •Note: It is also applicable if your chip's model is different from the above ones in prefix(letters), for chips from different manufacturers may be different in model prefix. But the number part needs to be identical. It is not compatible with the rolling code. Specifications: •Operation voltage: DC 12V •Operation current: 10mA •Frequency: 433MHz •Control distance: 50m (in empty areas) •Ambient temperature: -20℃ ~ +50℃ •Battery: 12V27A battery (included) •Item size: 5.5 * 3 * 1.2cm / 2.2 * 1.2 * 0.5in •Item weight: 28.2g / 0.99oz Compatible with: •Compatible chips: 2260（such as PT2260, SC2260, LX2260, HX2260, etc.); 2262（such as PT2262, SC2262, LX2262, HS2262, HX2262, etc.), PT2264, PT2240（LX2240), CS5211, 1527(EV1527, HS1527, HX1527), SMC918, AX5026, SMC926, AX5326-3, AX5326-4, FP527, HT600, HT680, HT6207, HT6010, HT6012, HT6013, HT6014, HT12D, HT46F49E, PIC16F630 (and those compatible with the above chips) Package included: •1 x Universal Remote Control Duplicator •1 x English User Manual