... alarm delay, intelligent door sensor function, beep indication could do free setting.5. Alarm Inform Mode: PSTN Call, GSM Call, ... 1 door sensor, 1 adaptor,1 backup battery, 1 siren. 1 English manual book.Product Picture: Shipping Method:1. We will ship ... POST, etc. You can choose the most suitable for you. Shipping Method Good gsm alarm systemReceived daysShipping areaHongkong post7-12 daysAll ...