The external bell MR-100R/G features a 115 dB audible alarm and two high-brightness LED lights for visual indication. It is powered by a backup 12V 1.2Ah battery and offers a choice of alarm tones and 3 flashing modes. The PC+ABS casing is weather-resistant. The double tamper system detects casing opening and detachment from the mounting base.

• Sound level: 115 dB
• Maximum power consumption: 500 mA
• Internal backup battery: 12 V / 1.2 Ah (included)
• Operating temperature: -35 °C ... 55 °C
• Power supply: 12 V ... 13.8 V DC
• Dimensions: 250 x 155 x 67 mm
• Weight: 1.01 kg
• Alarm duration: 1/4/16 minutes (optional)
• Flashing modes: 3
• Protection from tampering: yes (detection of opening and detachment)