The operation can be easily checked with the following procedure using a tester.
| Output method and checking procedure | Determination procedure | ||
NPN open-collector output
 |
A resistor is inserted between and OUT, and the voltagebetween OUT and  is measuredusing a tester. R: Approx. 4.7 kΩ, 1/2W |
The control output is operating property it the measurement voltage changes to low and high by the lighting turning ON or OFF. (See note.) |
|
| Output status | Text measurement voltage | ||
| NPN collector load built-in voltage output  |
The voltage between OUT and is measured using a tester. R: Approx. 4.7 kΩ, 1/2W |
||
| Output transistor ON |
L: 1 V max. (residual output voltage) |
||
PNP open-collector output
 |
A resistor is inserted between OUT and and the voltagebetween and OUT is measuredusing a tester. R: Approx. 4.7 kΩ, 1/2W |
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| Output transistor OFF |
H: Power supply voltage | ||
Note:This is a simple check that determines only whether the control output is malfunctioning.
