20mm Coin Cell Breakout w/On-Off Switch (CR2032)

This sewable PCB integrates a CR2032 holder, slide switch, and 0.1" pins for low-power backups in RTCs or wearables—two GND pins, switched V+, and always-on V+. Perfect for first-year engineering students adding coin cell power to Arduino clocks without messy wiring.

Pre-assembled/tested with header for breadboards; mounting holes at 22mm spacing. Suits <20mA loads; battery sold separately.

Pinout

• 2× GND.
• Switched 3V.
• Always-on 3V.

Note: Product size and dimensions may vary. Battery not included.

Disclaimer: The images shown are for illustration purposes only and may not be an exact match.