1. Power supply: 6VDC 2 CR2032 (230mAh) lithium batteries 2. Battery life: about 2 years, calculated based on 10 times per day 3. Operating frequency: 433.92 MHz +/-75KH 4. Transmit power: about 1mW 5. Coding format: HCS301 standard format Operating temperature: -10-+55 Number of password digits: 0 to 8 digits Transmit distance: 200 meters in open space; 35 meters indoors Protection level: IP56 Automatic lighting: When the surrounding light is insufficient, the key input signal LED automatically lights up. Automatic standby: When there is no key input signal for 10 consecutive seconds, the system automatically enters the power saving standby state. Buzzer prompt Prompt sound State indicated 1 short "beep" Key sound 1 long "beep" Password change successful (or code transmission) 5 short "beeps" Password error or enter the password change state 2 low-pitched "beeps" Battery low voltage alarm Low voltage alarm: When the battery voltage is lower than 4 volts, 2 low-pitched "beeps" are emitted each time the key is released. Colour:As Shown Material:plastic Package Contents: 1 * gate door opener 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. Note: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours Hope you have a pleasant shopping experience!