The batteries are standard sized button cells that are easy to replace
Brand SAFRAN ELECTRICAL AND POWER Part Number 8530K1 Quantity Each Technical Data Sheet EN
720MW product from CEC INDUSTRIES with the model number 7219Product details
It also gives slightly to securely hold mics of varying diameter
BROYCE CONTROL LBVR/A 12-24VDC Voltage Monitoring Relay, LBVR/A Series, SPDT, 8 A, DIN Rail, 250 VAC, Screw Meridian Technologies ST-2A-3ST The batteries are standard sizedThis is a Voltage Monitoring Relay, LBVR A Series, SPDT, 8 A, DIN Rail, 250 VAC, Screw product from BROYCE CONTROL with the model number LBVR A 12 24VDCProduct details Product Range LBVR A Series Contact Configuration SPDT Contact Current 8A Relay Mounting DIN Rail Contact Voltage VAC 250VAC Relay Terminals Screw Contact Voltage VDC 25VDC Supply Voltage Max 24V Power Consumption 3W Approvals & Standards CE, IEC Other details Brand BROYCE CONTROL Part