Wireless Siren (internal)
£16.45 incl. VAT (£13.71 ex VAT)
This affordable internal Siren has a transmission range back to the BT PIR & 2G UltraPIR of 50 metres (line of sight) or 100 metres 3G UltraPIR, this allows it to be installed in totally different buildings or safely hidden away in the same building as the detectors.
We strongly recommend that either this Siren, or the Solar Siren (or both) are used with every system (prevents intruders from thinking about attacking the single alarm).
This unique Siren is designed to trigger 15 seconds after the detector siren, which creates even more disturbance to an intruder, it will operate for 60 seconds but remain fully armed (ready to be activated again).