LED indicator light for power on and contacting status indication output terminals are the three screw terminals with blue plastic casing: the terminal in the middle for com. The left one for no, the right one for ncit can be used as a relay module for various logic control units low level triggering means that when the voltage between the Input terminal(in) and ground(gnd) is 0, the relay will be activated.
Product name : low level triggering relay module; output channel : 1
Output terminal : com, no, nc; working Voltage : 12V
Load Voltage : 10A 250Vac/30Vdc; size : 42.6 x 17 x 17Mm/1.67" x 0.67" x 0.67" (l*w*t)
Material : electronic parts; net weight : 15G
Package Content : 1 x low level triggering relay module