About this product 1. This password keypad is suitable for folding doors, meaning the revolving door operator can be equipped with it as an access control, as its buttons have left and right arrows and are suitable for operating both left and right doors. 2. It is waterproof and available in two colors. It is compact and practical overall. 3. Don't worry if you can't see at night. It is illuminated by LED lights, so you can quickly open the door when you get home at night. 4. It is very convenient to enter the password in case you forget the remote control. Specifications 1. Power supply: CR2032 lithium battery (230 mAh) 2. 1 year, based on 10 uses per day 3. Operating frequency: 433.92 MHz +/- 75 KH 4. Transmitting power: approx. 1 mW 5. Coding format: standard rolling code format 6. Operating temperature: -20 °C to +55 °C 7. Number of password digits: 0 to 8 digits 8. Launch distance: 50 meters outdoors, 35 meters indoors 9. Protection level: IP54 10. Overall dimensions: 85 × 75 ×