The 22-805 is a handheld, battery-powered digital multimeter (DMM) designed for measuring DC/AC voltage, DC current, and resistance. It is often lauded for its robust build, ease of use, and essential range coverage for automotive or home electronic projects.
Ensure the circuit under test is completely powered down and all capacitors are fully discharged before measuring resistance.
Turn the rotary power switch to and remove the test probes. radio shack 24 range digital multimeter 22-805 manual
: Features auto-polarity operation and is protected by double insulation to reduce electric shock risks.
The RadioShack 24 Range Digital Multimeter 22-805 is a digital multimeter designed to measure DC voltage, AC voltage, DC current, resistance, and continuity. It features 24 ranges, allowing you to select the most suitable range for your measurement needs. The device is equipped with a large, easy-to-read LCD display and a robust design that withstands rough handling. The 22-805 is a handheld, battery-powered digital multimeter
: A visual representation at the bottom of the LCD that shows the magnitude of the input relative to the full scale.
Insert the black lead into the "COM" port and the red lead into the correct port for your measurement (e.g., the V/Ω port for voltage and resistance, or the dedicated 20A port for high currents). Turn the rotary power switch to and remove the test probes
Never attempt resistance or continuity tests on a live circuit.
If you’re holding a vintage RadioShack 22-805 (catalog number 22-805, often called the "24-Range Digital Multimeter"), you have a piece of classic test equipment on your hands. These meters were workhorses for hobbyists and pros alike from the late 1980s through the 1990s.
Touch the red probe to the anode (positive end) and the black probe to the cathode (striped/negative end). A healthy silicon diode displays a forward voltage drop between 0.5V and 0.7V. Reverse the probes; the meter should read "1" (infinite resistance). 🧼 Maintenance, Battery, and Fuse Replacement
Go to manualslib.com and search for "RadioShack 22-805" . Users have uploaded scanned copies of the original owner’s manual. It includes the schematic diagram, operating instructions, and safety warnings.