Usage Tips:433mhz Waterproof Wireless Numeric Keypad Door Lock. Touch keyboard: 1-9, *, 0, #. Standby current: 18uA (Sleep mode), 6mA ( working mode). Working current: 28mA ( working mode). Three LED indicator light: Red, Green, Blue. Low battery indication: If the battery is low, keypad would have beep indication after every signal transmission is made. Anti- alarm. When the keypad is disassembled illegally, the buzzer "beep" to alert. 4 digits installer's pin code and 4 digits user's pin code setting. RF learning code function: can learn commonly used fixed code, HCS301 rolling code. Two channels RF 433MHZ transmitting. Scrambled pin code. Keypad buzzer on/off. Keypad back light on/0ff. Keypad security lock. Factory default setting Weatherproof Detailed Images I. Safety Instruction: 1. It is only allowed to be installed by professional. 2. that the numerical value needed is the same as the specification before installing. 3. It is only used for automatic gate and other similar mechanical devices. II. Product Instruction: 1. It is a 2-channel Transmitter (433.92MHz) and only can be activated by pressing correct password. 2. It can be installed both inside and outside room. 3. The product can the maximum safety because of the changing code for each time. 4. Working range can reach 100 meters in the open area outdoor. Indoor range is 35m. 5. The design extends the battery life. It can work for 2 years with 10 operations per day. Colour:Black Material:plastic+metal Package Contents: 1 * Receiver 1 * Keyboard 1 * Remote control Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.