5V-32V relays are shipped without an external case because the main purpose of them is being integrated into another electronic device such as a gate opener.
But when used as a standalone relay, this protective case is a useful extension to the relay. Both 5V-32V Wi-Fi, WiFi+RF versions of the relay are compatible with this box.
Note: DC4 4-gang relay's switch button on the relay board is short, so you will need a pin to push them for a manual on/off switch or pairing mode.
The back side of this case is DIN-rail compatible, you may use it to put the smart relay into an electric cabinet.
