Printing of PCB board is wrong, the correct printing is:
1 Operating voltage: power supply 1,DC 6.5-25V; power supply 2,DC 5V
2 Operating Current: Standby current (all relays closed) 13MA, 1 relay open 44MA, 2 relays open 76MA, 3 relays open 107MA, 4 relays open 139MA
3 Bluetooth protocol: Bluetooth Specification V4.0 BLE
4 Based on TI CC2541 chipset, Support android 4.3 or above,phone 4s or above (IOS8 or above) mobile control
5 2.4GHz-2.48GHz unlicensed ISM band
6 send commands via Android/IOS Bluetooth APP control relay turned on and off (we provide Bluetooth APP, you can also use your own APP to control relays, sending commands to control). It can also be triggered by an external pulse signal.
7 "Momentary" "Self-locking" "Interlock" "open" "close" 5 Commands
8 External trigger input, opto-isolated switch, low pulse inputs.
9 size (including housing) 115*90*40mm
10 Weight : 150g
NOTE: