Close the folding case and turn the unit over to access the back panel.
If you're new to using multimeters, practice taking measurements on known sources. This will help you get comfortable with the device and understand its responses.
: 3 ¾-digit LCD capable of displaying up to 3,999 units (4000 counts) before flagging an over-range limit. DC Voltage (DCV) : Measures up to 1,000 Volts . radio shack 24 range digital multimeter 22-805 manual
The RadioShack 22-805 is a . Do not use it on high-energy circuits (main breaker panels, industrial equipment, 480V systems). It’s excellent for:
Elias packed up the meter. He carefully folded the manual and placed it back into the case. That piece of paper was more valuable than the tool itself. Without the manual, he would have been guessing at the jacks, likely blowing a fuse he couldn't replace, and leaving the basement without an answer. Close the folding case and turn the unit
The RadioShack 24-Range LCD Digital Multimeter (Catalog Number 22-805) Go to product viewer dialog for this item.
Voltage is measured in with the component or power source. : 3 ¾-digit LCD capable of displaying up
If you own or have recently acquired this classic piece of test equipment, this guide serves as a comprehensive reference manual to help you safely operate and maintain it. Key Specifications & Features RadioShack 22-805
Replace it strictly with a . Using a higher amp fuse bypasses safety protections and risks destroying the DMM. ⚠️ Safety Guidelines
| Feature Category | Detailed Specifications | | :--- | :--- | | | 3¾-digit LCD display (maximum reading of 3,999 ) | | DC Voltage (V DC) | Ranges : 400mV, 4V, 40V, 400V, 1000V Accuracy : ±(0.8% of reading + 1 digit) | | AC Voltage (V AC) | Ranges : 4V, 40V, 400V, 750V Accuracy : ±(1.2% of reading + 4 digits) | | DC Current (A DC) | Ranges : 400µA, 4000µA, 40mA, 400mA, 20A Accuracy : ±(1.2% of reading + 2 digits) | | AC Current (A AC) | Ranges : 400µA, 4000µA, 40mA, 400mA, 20A Accuracy : ±(1.75% of reading + 5 digits) | | Resistance (Ohms) | Ranges : 400Ω, 4kΩ, 40kΩ, 400kΩ, 4MΩ, 40MΩ Accuracy : ±(1.0% of reading + 3 digits) | | Continuity Check | Yes, with an audible buzzer | | Diode Test | Yes, for testing semiconductors | | Data Hold | Yes, freezes the reading on the display | | Analog Bar Graph | Yes, for quick trend analysis | | PC Connectivity | Yes, opto-isolated RS-232 serial port with included software | | Safety Rating | CAT II (600V) | | Power & Size | Uses a standard 9V battery, with automatic power-off after 15 minutes of inactivity to preserve battery life |
If the low-battery indicator appears, the internal batteries (typically 9V or specific button cells depending on the sub-revision) must be replaced to maintain calibration accuracy. for data logging or a guide on specific measurement procedures for this model?