The BatterEasy ER34615 Extended Life siren battery is compatible with the ERA Protect Battery Operated Wireless Siren using 2 x DC lithium 3.6V ER34615 cells to form a 7.2V cell pack. Specification:

 

Type: 2 x 3.6V ER34615

Dimension: 67mm x 33mm x 63mm

Finish: Black wrap, 100mm cable to 2-pin connector

Rating: 7.2V

Compatible with the following sirens: SALAPWHESSU