This Precision Extension Test instrument is a highly accurate milliohm meter. It can be used to test 3 wire extensions for hobby servos, etc.

Why get one? Most extensions and switches have crimped on terminal ends and often the quality is bad. A high resistance extension can lead to loss of control and expensive damage. This instrument will analyze and tell you the resistance of any extension you want to test. In addition, it will test on/off switch resistance of any switch using standard extension connectors.

Pays for itself the first time you find a bad extension and replace it before you have a crashed plane, heli, car or boat!

Extension Tester Instructions-r1.0

Notes:

Standard 9V battery not included
Power Switch does not light.
Wire colors are black, red, white, you can use the brown, red, orange extensions also
QR code on front connects to the instruction manual