Intended use: SATEL. External dimensions of the enclosure: W=320, H=400, D+D1=90+8 [+/-2 mm]. External dimensions of the front panel: W1=325, H1=405 [+/-2 mm]. Transformer: TRP 50VA/16V/18V/20V, IP30. Fitting battery: 17Ah/12V. Tamper protection: tamper – opening of the enclosure. Notes: surface mounted enclosure, locking – bolted x4, distance from the wall - 8mm.