Specifications: Our wireless security/burglar alarm system Savercall-1000 is produced with premium materials under the strictest quality control system. Our alarm systems can detect any break-in and intruder giving you a total peace of mind anywhere anytime. For more, please contact us now. - wireless sensor detection(fmfrequency) - no need wire cable work - diy type, easy self installation - lcd display&voice guidance - monthly management fee free - remote operation via telephone - 5 phone numbers programmable - rechargeable back-up battery - possible to use door sensor as a chimebell during wait mode - wire&wireless siren - possible to specify activation scope by sensors(wait/alarm-home/alarm-away) - multiple language support