Chuango Alarm Remote Case

If you own an home alarm system like Chuango H4 or ELV FAZ 5000, you will sooner or later hit the alarm-button on the remote just by wearing the remote in your pocket. This case with reduce the opportunity of pressing buttons by coincidence. I posted two versions:
1) Only arm and disarm key are available
2) All four buttons are available
There are some more rebranded Chuango home alarm systems on the 315/433/868/915 Mhz band. The remote always stays the same.