• High Tech Pet Battery Replacement for the MS-4 and MS-5 collar keys
• Compatible with MS-4 and MS-5 collar keys
• Set includes 2 B3V1A batteries
• Each battery lasts approximately 3 months
• Easy, tool-free installation
• Designed specifically for High Tech Power Pet Automatic Door Mount

The High Tech Pet B3V1A Replacement Battery 2-Pack keeps your MS-4 and MS-5 ultrasonic collar keys fully powered for continuous hands-free door access. Engineered for simple, tool-free installation, each battery provides up to 3 months of dependable energy for your pet's collar key.

Tool-Free Snap-In Maintenance
Designed for quick maintenance, these compact batteries snap directly into the collar key casing without requiring tools or complex disassembly. Replacing weak batteries promptly ensures your High Tech door responds instantly whenever your pet approaches.

Technical Specifications & Features:

• Targeted Compatibility: Engineered specifically for High Tech MS-4 and MS-5 ultrasonic collar keys.
• Long Operational Life: Each B3V1A battery delivers approximately 3 months of daily performance.
• Convenient 2-Pack: Includes two replacement batteries to maintain a ready spare.
• Collar Key Dedicated: Designed exclusively for collar keys, not intended to power the main door motor.

Looking to power your electronic door unit instead? Explore the High Tech battery charger and kit.