Further information for ALLNET ALL-HL-54 (B65) - 4duino Relay Module 4 fold 5 volts optocouplers
ALLNET 4duino Relay Module 4-fold 5 volts without optocouplers
4duino 4 road relay module 5V without light coupling)
4 relays with 1xUmschalter
Max.250VAC 10A or 10A 30VDC. HL-54 V1.0 (B65)