School bell controller 230V AC Type: SDM-10 EXT10000118

School Time Control – Reliable Bell Controller SDM-10

The SDM-10 school bell controller is an advanced device designed for automatic control of the acoustic signaling system in schools. Thanks to it, organizing breaks and lessons becomes simple and precise, and you gain confidence that the class schedule will be carried out without interruptions. The device is compatible with popular school bells, such as DNS-212, DNT-212M or DNS-212D models.

Versatility and functionality for professionals and users

The SDM-10 controller offers a wide range of programming options, allowing you to adapt the schedule to the specific needs of the educational institution. The ability to set the duration of lessons, breaks, and start and end times allows you to create a perfectly tailored bell schedule. In addition, the device has alarm functions and the ability to program shortened lessons, which increases its usefulness in various situations.

Solid construction and reliability

The device has been designed with long-term and trouble-free operation in mind. Mounting on a TH 35 rail ensures stability and ease of installation, and battery-powered settings backup guarantees that settings are maintained even in the event of a power failure. The controller is characterized by high timekeeping accuracy (maximum ±1 second per day) and a solid construction resistant to mechanical damage. Made of high-quality materials, the controller is designed to operate in a wide temperature range (-20°C to +60°C).

Key features of the SDM-10 controller:

• Annual programming: Allows you to plan bells for the entire school year.
• Operating modes: Manual, automatic – full control over the bell system.
• Automatic daylight saving time / winter time change: Eliminates the need for manual time correction.
• Two independent control inputs: Allow you to activate programmed functions or manual mode. The ALERT input immediately activates both output relays.
• Relay output: Two changeover contacts with a load capacity of 16A/250VAC ensure compatibility with various types of bells.
• Battery-powered clock and program backup: Ensures continuous operation even during power outages (3 years for the clock, 10 years for the program).
• Clear LCD display with amber backlight: Facilitates configuration and reading information.
• Mounting on TH 35 rail: Quick and easy mounting in the electrical distribution board.
• Compliance with safety standards: PN-EN 60730-1; PN-EN 60730-2-1; PN-EN 61000-4-2,3,4,5,6,11 guarantee safe use.

The SDM-10 controller is characterized by a supply voltage of 230 V AC (with a tolerance of -15 ÷ +10 %), a rated frequency of 50 / 60 Hz and a rated current consumption of 2 W / 14 VA. It has one output channel and a relay current of 16 A / 250 V AC. The operating temperature of the device is in the range of -20°C to +60°C, and the degree of protection of the housing is IP20.

The SDM-10 controller is an investment in comfort and efficiency of time management in school – a solution recommended for both installers of building automation systems and directors of educational institutions looking for reliable technological solutions.