EN50131-4 Grade 2 and Grade 3 options
Backlit option – ‘Dusk to dawn or ON’ backlit model only
Comfort LEDs
Lithium smart battery charging
SAB/SCB option
Confirmed alarm input – Audible and LED strobe – optional plus models
Self test input plus models
Fault relay output plus models
Trigger polarity -/+
Tamper polarity -/+ plus models
Trigger wire monitoring plus models
Adjustable siren timer 3min / 15min / intermittent depending on model
Adjustable siren volume Hi/Lo
This Senza range of external warning devices includes 2 wired models at Grade 2 & 3 Environmental class IV and can be installed in security systems in accordance with EN50131-1: 2006 + A3: 2020.
These wired models comply to EN50131-4: 2019, WD type Z; These warning devices feature one piezo and one LED strobe for audible and visual indication of an alarm activation. Each model includes the latest innovation in electronics and incorporates a lithium Ion battery for better reliability, each
of the wired versions incorporates a smart charging circuit to optimise the battery capability and battery life.
| Colour | White |
| Quiescent Current | 35 |
| Comfort LEDs | Tamper | Hold Off | Battery |
| SAB/SCB | SAB/SCB |
| Engineer Hold Off | Yes |
| Trigger Wire Monitoring | Yes |
| Tamper Protection | RFMS & Cover |
| Sounder Type | Piezo |
| No. of Sounders | 1 |
| Backlight | Yes |
| Visual Indicator Type | LED Strobe |
| Battery | 3.7v 2000mAh Lithium Ion |
| Confirmed Alarm Input | Yes |
| Self Test Input | Yes |
| Spirit Level | Yes |
| Adjustable Siren Volume | 105 | 85 |
| Lens Colour | Supplied separately |
| Fault Relay Output | Yes |
| Range | Senza |
| EN50131-4 Grade | G2/G3 |
| EN50130-5 class | IV |
| IP Rating | 44 |
| Temperature Range | -10oC – +40oC |
| Material | Polycarbonate |
| Lens Material | Polycarbonate |
| Dimensions (mm) | 284 x 213 x 59 |
| Sound Output (dB(A)) | 85 | 105 |
| Voltage Range | 10 – 15v |
| Nominal voltage (Vdc) | 12V |
| Flash Only Current (mA) | 55mA |
| Sound Only Current (mA) | 175mA |
| Sound & Flash Current (mA) | 300 |
| Visual Indication | LED Flash |
| Siren Timer (minutes) | 3 | 15 |
| Features Selected by | Dipswitch |
| Selectable Grading | Yes |