For the multimeter, look for the "Data Pro" branding, as this can help narrow down the search results. The official manual from the manufacturer would be the most authoritative source for original schematics and operating instructions.
The RadioShack 12-150 is a small sealed-lead-acid (SLA) 12 V, 1.2–1.5 Ah (often marketed as 12 V, 150 mA·h? — common labeling varies) rechargeable battery pack used in consumer electronics such as emergency lighting, backup power for alarm systems, hobby electronics, and small UPS modules. It is typically a rectangular, valve-regulated lead-acid (VRLA) battery with faston/tab or wire leads and a maintenance-free, non-spillable design. Radio Shack 12 150 Manual
The 12-150 is not waterproof or water-resistant. Keep it away from rain, splashes, and high-humidity environments. For the multimeter, look for the "Data Pro"
: It detailed the precise steps for programming device codes and adjusting the antenna for optimal reception. A Legacy in Print — common labeling varies) rechargeable battery pack used
RadioShack 12-150 (also known as the "Extreme Range" or "Nora" model) is a vintage portable weather alert radio. If you are looking for a standout "feature" for a project or guide based on its manual, the Automatic Alert Mode is the most significant. Top Feature: Automatic Emergency Alert
Find the slide-off battery door on the back of the radio.