Waterproof Gas Detector with LPG Relay BS-375-WP-A 921375000

Autonomous Fire Detector Beacon Siren BS-521/1 230VAC 10921521006

The BS-521 is an autonomous fire detection siren that gives audible and visual signals while the BS-520 gives only audible. It has rechargeable Ni-Cd batteries to work in case of power failure that usually follows fires. They are connected with one or more fire detection buttons (model BS-536 of our company) so that in case of fire by pressing one of the alarm buttons to activate the series .

Specifications:

• System: Autonomous
• Voltage (V): 220-240
• Battery type: 3.6 V / 1 Ah (Ni-MH)
• Autonomy: 90 minutes
• Charging time: 24 hours