Onyehn 1 Channel DC 3V Relay High Level Driver Module Optocoupler Relay Module Isolated Drive Control Board for Arduino (Pack of 5) auspowers_batchthree Hard-to-Find Fastener 014973294786 Pushnut Bolt

Hard-to-Find Fastener 014973294786 Pushnut Bolt Retainer

and industrial use

One female NPT cam coupler end for connecting to male adapter and one male shank for connecting to hose

If you are looking for a magnifier

Please also understand that a big obvious switch or else people will know it looks fake

Onyehn 1 Channel DC 3V Relay High Level Driver Module Optocoupler Relay Module Isolated Drive Control Board for Arduino (Pack of 5) auspowers_batchthree Hard-to-Find Fastener 014973294786 Pushnut BoltOnyehn 1 Channel DC 3V Relay High Level Driver Module Optocoupler Relay Module Isolated Drive Control Board for Arduino (Pack of 5) Size: 70mm X17mm X20mm (LxWxH) Main chip: EL817, SRD DC03V SL C Work voltage: DC 3V 3. 3V Control 10A 250VAC, 10A 30VDC load Features Instructions with the signal output Signal input port can connect microcontroller IO port, high level signal Double power selection design anti interference ability is strong, photoelectric