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BX-35ZW 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 elegant design, easy-to-install BX-35ZW is a premium choice for the modern smart home. 

The BX-35ZW is energy saving and environmentally conscious, requiring only two Alkaline batteries, yet still has a long battery life. The BX-35ZW generates unique alarm sounds for fire and burglary to inform users of the type of danger at hand. It provides programmable siren duration of 3, 5, and 10 minutes. 

In addition to producing audible and visible warnings in the case of emergency, the BX-35ZW emits beep notifications for arming and disarming of a security system, and of its low battery status. It’s tamper-deterrent feature protects against unauthorized removal and sabotage. The BX-35ZW is compatible with others’ Z-Wave systems.


  • Siren output level is 104dB at 1 meter

  • Unique alarm sounds for fire and burglary

  • Lightweight and flexible to install

  • Modern & Elegant design

  • Programmable siren duration of 3/5/10 minutes

  • Sound notifications of arming, disarming, and low battery status

  • Regular supervision signals to check system integrity

  • Low battery detection

  • Tamper protection prevents unauthorized removal

  • IPX5 waterproof and UV resistant housing

  • Compliant with CE requirement

  • Compatible with other’s Z-Wave mesh networks

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