Fourgroup SA1 Remote Alarm With Battery Backup A Self-powered warning signal to indicate alarm via remote contact.SA/1 version: acoustic. Please not this product requires a float switch to operate. To view our range of float switches please Click Here Features - Green power ON indicator light- Red alarm indicator light- Red acoustic alarm shut-off indicator light- 90dB alarm siren at 1 metre- Red electronic flashing light (SLA/1 model only);- Acoustic alarm enable/disable buttons;- Battery charger and back-up battery for 24h alarm power supply- Internal selector to enableContinuous/Self re-settable alarm- Internal selector to enable siren timing- Acoustic alarm timer control settable from 0-180Benefits - Autonomy in the event of black-out: approx. 24 hours- Red flashing indicator light (SLA1)- Acoustic alarm 90dB- Acoustic alarm shut-off Technical Info - Battery Endurance: 24hr- Acoustic Pressure: 90dB- Weight: 1 kg