Catalog > Consumer Electronics > Security & Alarms > bpt Intercom Systems > Systems > GSM Systems BPT GSM Unit GSM Unit BPT GSM/I004 GSM UNIT COMPLETE 1 TO 4 NUMBERS Discontinued Specifications, Prices & Availability may change without notice. Images are for illustration purposes only. E&OE System Includes 1 x BPT HSC/1 - Torgha Entry Panel surface mounted 1 pushbutton1 x BPT HA/200 - Audio Module1 x BPT GSM/I004 - GSM unit with the main electronics and the SIM card used for applications up to 4 numbers1 x BPT A/200R - Audio Entry System Mains Power Supplier 230V, 15VA. 4 DIN units low profile module