What is RTU5015Plus and what is the new features: What is RTU5015Plus is different from Normal RTU5015 and RTU5024 1. Automatically charge the battery when DC power supply working. 2. Backup battery can send the alarm when power off, and also monitor the alarm input during power off ,if input port has be triggered ,it send the alarm SMS to report 3. Customized SMS to remote control, very safety and very simple. With SMS ,you can control the Relay output to ON or OFF or Working for a specified time. 4. Different alarm working mode: you can select the alarm input when Shorted to GND or Disconnect to GND or Both status change to send the SMS RTU5015 Plus GSM Remote control board: The GSM Gate Opener RTU5015 is a very simple device which can be used for authorized door access, controlling gates,switching of remote equipments, car parking systems. Actually the GSM Gate Opener RTU5015 can be used in places which require turn ON/OFF your system, machine, equipment remotely with a FREE call from your mobile phone. Model Number: RTU5015 Plus Security Mode: Fail Safe Direction: None Power input: DC12V Working Frequency: GSM(2G)-850/900/1800/1900MHz Maximum authroized number: 999 Usage: Electric Door or Gate Opener Access control Remote Access Relay Control by Mobile Phone Call (FREE) Backup battery inside for power off alarm (Rechargeable battery included) Even when power off, also keep monitor the alarm input for safety Android App Available Now Make Easy Control 2 Digital Input (NC/NO, dry contact) Can use for Water Level Detector, Gas Detector, Smoke Detector, PIR Motion Detector, Door Magnets Sensor.etc. 1 Relay Output (3A/240VAC, NC and NO, Dry Contact) Well used for remotely switch ON/OFF equipments by Free Charge Phone Call Customized SMS for easy and safety remote control Backup battey for power off alarm. and also keep to monitor the input port even