SM5CBW's Arduino - Alarm system

Blue led = system activated
Red led = alarm detected
Green led = ready
Yellow led = section open

This is the keypad for activating the alarm which can be done with RFID-tag or pin-code.
The PIR-detector controls the backlight of the display.

Interior view. Left side = RFID module, keypad and LCD 2x16 RGB
Right side = Arduino Mega 2560, RTC module and some electronic glue.

Here is the central itself.
Left side: relays, SIM800L, step-down converter (12 V to 3,8 V) and some glue.
Right side: Mega2560, RTC DS3231, FeRAM and more glue.