Call button Detnov, MAD-451-I

The Detnov MAD-451-I is an addressable manual call point with an isolator. It is used in addressable fire alarm systems, where it communicates with the control panel. The call point is resettable, and a key is used to reset it.

The device works on 22–38 V DC and draws less than 300 µA in standby and 3 mA in alarm. Its LED indicator flashes on each panel communication and stays steady on when a fire alarm is raised.

Key features:

• Device type: addressable manual call point with isolator
• Resettable, reset with key
• Operating voltage: 22–38 V DC; standby current: < 300 µA; alarm current: 3 mA
• LED indicator: flashes on each panel communication, steady on fire alarm
• Standards: EN 54-11, EN 54-17; certification: 0370-CPR-3150
• Protection rating: IP40
• Operating temperature: -10 … +55 °C (14 … 131 °F); dimensions: 98 × 98 × 48 mm (3.86 × 3.86 × 1.89 in)