The CQR BCSENZ/S/PLUS/L/W is the backlit Senza S Plus backplate: the electronics unit of a wired external sounder/strobe (bell box) for intruder alarm systems, with selectable Grade 2 or Grade 3 operation. The Plus model adds a confirmed alarm input, self-test input, fault relay output and trigger wire monitoring, and the backlight can be set to dusk-to-dawn or on. The lens colour is supplied separately. The Senza range of wired external warning devices covers Grade 2 and Grade 3, environmental class IV models for security systems installed to EN 50131-1:2006+A3:2020.
Key features
- Selectable Grade 2 or Grade 3 (EN 50131-4)
- Backlight: dusk-to-dawn or on
- Comfort LEDs for tamper, hold-off and battery
- Lithium smart battery charging
- SAB/SCB option
- Confirmed alarm input (audible and LED strobe), self-test input and fault relay output
- Trigger wire monitoring; trigger and tamper polarity -/+
- Adjustable siren timer and Hi/Lo siren volume
- Engineer hold-off; built-in spirit level
- RFMS and cover tamper protection
Technical specifications
- Part number: BCSENZ/S/PLUS/L/W
- Security grade: Grade 3 (Grade 2/3 selectable)
- Environmental class: IV
- Standards: EN 50131-1, EN 50131-4, EN 50130-5
- Nominal voltage: 12V DC
- Quiescent current: 35mA
- Current: flash only 55mA; sound only 175mA; sound and flash 300mA
- Sounder: 1 x piezo, 105 or 85dB(A)
- Visual indicator: LED strobe
- Siren timer: 3 or 15 minutes
- Battery: 3.7V 2000mAh lithium-ion
- IP rating: IP44
- Operating temperature: -10°C to +40°C
- Material: polycarbonate
- Dimensions: 284 x 213 x 59mm
- Colour: white
- Warranty: 2 years
