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  • "Hey Mike, thanks for the vending machine, using a lot less double ended cables after swtiching to the silicone"
    John, OH
  • "Always willing to cross reference parts, and save money, thanks"
    Kevin, IN
  • "Installed the vending machine on our plant floor, and we do 2 CI's per month now from the data for where parts are used most. Good system."
    Sal, Mexico
  • "Best price on cables, always in stock for us"
    Michelle, Richmond, BC
  • "Usage cut by 2/3rds after going with Metalhead types, thanks guys"
    Doug, Richmond Hill

Sensor Testers

Sensor Tester - S-TER-N for Function and PNP/NPN Indication

Product Specifications:  www.htmsensors.com/PDFspecs/S-TER-N_Specsheet.pdf

Full function Sensor Tester

Pocket-sized sensor tester with push-type terminals makes wire connections quick and easy. Allows for fast field checks, troubleshooting and/or demonstration of 10-30 V DC sensors with a maximum sensor current draw of 100 mA. DC 2, 3, or 4-wire type sensors. Confirms operation of inductive, photoelectric, capacitive and ultrasonic sensors.


Model Number:  S-TER-N
Supply Voltage 18 V DC
Maximum Rated Load 200 mA (fused)
Leakage Current -
Short-circuit Protection Yes
Over Voltage Protection Yes
LED Display Green: Power / Orange: Low Power / Red: PNP / Yellow: NPN
Audible Output Yes
Operating Temperature
Room Temperature
Humidity 80% non-condensing
Housing Material ABS
Protection Class IP40
Battery 2 x 9 V (not included)
Dimensions Wiring Connections
Displaying products 1 - 1 of 1 results
18 Volt Sensor Tester - Batteries not included. Perfect pocket sized sensor tester to verify operation of proximity sensors, photoelectric sensors, pneumatic cylinder sensors, and other control products. The tester verifies PNP or NPN operation.
$70.00

S-TER-N