Destination: BOSCH – Series: B. External dimensions of enclosure: W=280, H=320, D+D1=100+8 [+/-2 mm]. External dimensions of front panel: W1=285, H1=325 [+/-2 mm]. Transformer: TRP 40VA/16V/18V, in PC/ABS enclosure, IP30. Battery space: 7Ah/12V. Tamper resistance: Tamper – unwanted enclosure opening. Notes: surface mounted enclosure, locking – bolted x4, distance from wall - 8mm.