FISH-8840 Transistor Tester Cradle with Battery Compartment, Switch and Status LED

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This electronics component tester, primarily designed for transistors, also works on inductors, resistors, mosfets, capacitors, and more. Various versions exist, but the popular one features a base size common to both smaller and larger LCD variants. The device runs on a 9 VDC battery and includes a battery compartment in its caddy. The onboard switch serves as a Standby and Reset button since it continues drawing current when connected to the battery. To eliminate this issue, a Circuit board Pushbutton switch with power status LED has been added. The enclosure only covers the sides and bottom to prevent short circuiting risks. This tool is ideal for workbench use and features stick-on rubber feet on the bottom. It can be machined or 3D printed and is available at around $20, offering high accuracy. Some versions come with a cover or full enclosure but are pricier.