Alarm Systems



BX-35 bell box is a battery-operated wireless outdoor siren generating a loud 104 decibel siren sound and strobe lights during an alarm to provide visible and audible alerts. Encased in a durable, IPX5 waterproof design, easy-to-install BX-35 is a premium choice for the modern smart home.

BX-35 is energy saving and environmentally conscious, requiring only two Alkaline batteries, yet still has a long battery life. The BX-35ZBS generates unique alarm sounds for fire and burglary to inform users of the type of danger at hand.

In addition to producing audible and visible warnings in the case of emergency, the BX-35 emits beep notifications for arming and disarming of a security system, and of its low battery status. Its tamper-deterrent feature protects against unauthorized removal and sabotage.


  • Siren output level is 104dB at 1 meter
  • Unique alarm sounds for fire / burglary / water
  • Lightweight and flexible to install
  • Modern and Elegant design
  • Programmable siren duration of 3/5/10 minutes
  • Sound notifications of arming, disarming, and low battery status
  • Random supervision signals to check system integrity and trouble shooting
  • Low battery detection
  • Tamper protection prevents unauthorized removal
  • IPX5 waterproof and UV resistant housing
  • Compliant with CE requirement

Product Documents