Enclosure meets the requirements of the Grade 3, EN 50131 standard; Place for battery: max. 17 Ah ; Tamper protection: TAMPER switch indicating open the cover ; Application: Alarm control panel, Devices for mounting on a DIN, TS-35 rail, INT-E, INT-O, INT-PP Expanders, Enclosed Power Supply Units APS-612 / APS-412 ;