2Pcs DC 5V 4 Channel Relay Module Board Shield with Optocoupler Isolation Suport High/Low Level Trigger Relay sold2025 20 pieces 24-Element high efficiency

20 pieces 24-Element high efficiency universal mixing nozzleMaterial: PlasticColor: Clear with Green Mixing ElementThe square bayonet mixing tube with lightweight A square bayonet connector

When the water level is beyond upper limit

Compatible with both Laser and Inkjet printer

can not match with other modules and other number of teeth)

Delivers smooth

2Pcs DC 5V 4 Channel Relay Module Board Shield with Optocoupler Isolation Suport High/Low Level Trigger Relay sold2025 20 pieces 24-Element high efficiency2Pcs DC 5V 4 Channel Relay Module Board Shield with Optocoupler Isolation Suport High Low Level Trigger Relay Description: Maximum load: AC 250V 10A, DC30V 10A SMD optocoupler isolation, strong driving ability, stable performance; trigger current 5mA The module voltage 5V Each channel module can be set high or low triggered by jumper Fault tolerant design, even if the control line is broken, the relay will not operate Power indicator (green), 4 relay