Destination: BOSCH – Series: B, G. External dimensions of enclosure: W=510, H=468, D+D1=100+8 [+/-2 mm]. External dimensions of front panel: W1=515, H1=473 [+/-2 mm]. Transformer: TRP 80VA/16V/18V/20V, in PC/ABS enclosure, IP30. Battery space: 2x17Ah/12V. Tamper resistance: Tamper – unwanted enclosure opening. Notes: surface mounted enclosure, locking – bolted x4, distance from wall - 8mm.