Timer Switch Timer Controller,Microcomputer Ringer School Beller Bell Timer Electric Bell Timer Switch ON/OFF School Programmable Time Relay LCD display

• This product uses a dedicated high-performance microcomputer chip as the core, which can automatically trigger an alarm bell depending on user settings.
• Accurate time and easy Widely used in schools, companies and institutions to control the automatic bell.
• In one day, a maximum of 20 groups can be achieved in single mode and 40 groups in double mode.
• Powered by 1 x AAA battery (not included), convenient for battery change.
• One can every single single programprogramprogram it after reading the manual only once.

Function: 1. This product uses a dedicated high-performance microcomputer chip as the core, which can automatically alarm the bell according to user settings. 2. In one day, a maximum of 20 groups can be achieved in single ring mode and 40 groups in double ring mode. 3. Accurate time and easy operation. Widely used in schools, businesses and institutions to control the automatic bell. 4. Powered by 1 x AAA battery (not included), convenient for battery . 5. Simple program, everyone can program it after reading the manual only once. Specification: Condition: Brand New Item Type: Microcomputer Timer Switch Material: ABS Color: As picture show Working power: 220V/50Hz Applicable voltage range: 180-240V Power Dissipation: Less than 5W Time error: less than ± 2 s/day. Ring time: 0 - 99s adjustable. Double bell interval time: 0 - 99 minutes adjustable. Power supply: 1 x AAA battery (not included) Package list: 1 x Microcomputer Timer Switch1 x Manual Note: If the screen is unclear or there is no display, the battery in time.