Battery pack for Visonic wireless sirens:


Comprises 2 x 2 cell packs of ER18505M, each cell is rated at 3.6v, 3.5Ah.


This battery is compatible with the following Visonic wireless sirens:

Powermax MCS-740
Powermaster SR-740 PG2
Powermaster SR-740 HEX PG2

NOTE: Not compatible with Visonic Powermax MCS-710 & MCS-730 sirens

Visonic Powermax/Powermaster Siren Battery Twin Pack (K-305177)

  • This is a restricted item. Mainland UK delivery only.

NOTE: All our Visonic Powermaster PG2 wireless alarm kits and devices operate on 868-1 UK country code. for more information about compatibility, please see our FAQ page.

Prices shown exclude VAT and shipping.


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