... the system by 5 ways :SMS,main host(keypad),wireless keypad,keychain remotes,or even remotely by phones(PSTN ... alarm don’t support SMS) 9.available in AC/DC with ... ~50°C, Less than 80%R.H.Basic Kit Contains:…Keypad / Control Unit ~1 pc. …Keychain Remotes ~2 pc. ... Adaptor ~1 pc. Home Security GSM Alarm System wireless With LCD Touch Keypad CE,FCC