... this "1wired output".use the mobile phone send "2off" message to the alarm panel, then your fan will turn off, if your fan ... is connected with this "2wired output". The sn2301G is a very powerful GSM ... , speak, arm, disarm, or turn on/off the siren from a remote phoneThe functions are the same as new sn2300, 5900 and 2200 ...