Powermax Alarms

SR-740H Hex Powermaster External Siren PG2 (868-1 UK)

The SR-740 Hex is a secure external siren/sounder for the Powermaster range of wireless control panels. A maximum of 2 sounders can be fitted to the Powermaster 10, and up to 8 to the Powermaster 30 and 33. Battery and fixings are included.

See the articles PowerMaster Overview and PowerMaster Review.

More details

£98.86 incl. VAT

(£82.38 VAT not incl.)


  • Prolonged battery life (8 years with typical use)
  • Loud 110db piezo siren
  • Differentiated alarm sounds for intrusion, fire, gas and flood
  • Large print screen area for customizable logos



New products

No new product at this time

Top sellers

  • Remote Keyfob MCT-234 (868MHz)
  • Next K9-85 (Pet Tolerant) MCW DD PIR (868MHz)
Remote Keyfob MCT-234 (868MHz)
The MCT-234 is a 4-button miniature wireless...
Next K9-85 (Pet Tolerant) MCW DD PIR (868MHz)
The Next K9-85 PIR MCW PowerCode™...
Powermax MCT302 Magnetic Door Contact (868MHz)
The MCT-302T is a fully supervised...
Powermax Sounder Battery 3.6V 19Ah for MCS710, MCS720 & MCS730 (Mainland UK Ship only)
NB: This item is available for NEXT DAY UK...
Powermax Next MCW DD PIR (868MHz)
The Next PIR MCW PowerCode™ wireless...

All best sellers