The DSC BATT-PGX901/X911 is the battery for the DSC PG9901 and PG9911 PowerG Wireless Sirens. This battery provides an average lifespan of eight years. The PG9901 and PG9911 already come with a BATT-PGX901/X911 battery, but a second one can be added for backup. Buy this siren battery here.
The DSC BATT-PGX901/X911 serves as the battery for the DSC PG9901 and PG9911 PowerG Wireless Sirens. Both of these sirens already come included with a battery. But both can support a second battery for backup power. This battery has an average lifespan of eight years, and it can be easily replaced. Each battery is a 3.6 Volt Li-Thionyl Chloride 0-102710.