SigmaSR-740 PG2

The Visonic SR-740 PG2 is a fully wireless two-way PowerG outdoor siren for PowerMaster alarm systems. It includes a 110dB piezo sounder, high-power strobe, IP55 weatherproof enclosure and lithium-battery power, eliminating the need for wiring back to the control panel.

Technical description

The SR-740 PG2 uses two-way PowerG wireless communication. The official data sheet specifies four independent 3.6V/3.5Ah lithium cells, battery life up to 8 years under typical use, an operating temperature range of -33 to 70°C and dimensions of 295x186x63mm. Weight including battery is 970g. Different alarm sounds are supported for intrusion, fire, gas/CO and flood, and the device provides visible wireless link-quality indication.

Typical applications

Suitable for PowerMaster wireless alarm systems in homes, offices, shops, warehouses, outdoor locations where cabling is difficult and installations requiring an external siren with strobe and two-way communication.

Compatibility note

The SR-740 PG2 is not a general-purpose wired siren. Before ordering, verify that the control panel or receiver supports PowerG and is compatible with the PowerMaster family. Also confirm the required strobe lens colour where different lens versions are available.

Frequently asked questions

Is it compatible with any alarm control panel?
No. It is designed for compatible PowerMaster systems and PowerG receivers.

What is the sound output?
The official specification is 110dB.

How long does the battery last?
The manufacturer specifies up to 8 years under typical use.