Teng Tools

A circuit tester for checking electrical circuits.

Brass with steel probe and screw on cover

Replacement bulb widely available (24 volt, 5 watt festoon type bulb)

Simple to use to check if circuits are live and intact

- Brass with steel probe and screw on cover
- Suitable for use between 6 and 24 volts
- 850mm cable with simple alligator grip
- Replacement bulb widely available (24 volt, 5 watt festoon type bulb)
- Simple to use to check if circuits are live and intact

Dimensions shown in inches with millimeters in parentheses — figures come straight from the official Teng Tools product data. Docs links open the official Teng Tools PDF data sheet, user manual or parts diagram for that part number.

Items marked “In store” are stocked at tengtoolsusa.com and ship from our Fort Worth, Texas warehouse. For anything marked “Ask us”, contact us — we can usually get it. Every Teng Tools hand tool carries our lifetime warranty against manufacturing defects.

A circuit tester for checking electrical circuits. Sizes, lengths and weights in American units.

Measuring Instruments (9850) — specs

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Measuring Instruments (9850) — specs

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Part no.	Size	Length	Weight	Docs	Availability
9850	—	—	1.4 oz (40 g)	Data sheet	In store