KEYDIY KD-B21-4 Knife-Style 4-Button Flip Key Remote — 315/433MHz

The KEYDIY B21-4 Universal Flip Remote is designed for professional locksmiths and auto key specialists. With a spring-loaded flip design and durable shell, it’s a reliable replacement solution for a wide range of vehicles when paired with KEYDIY programming tools.

• Knife-style 4-button flip remote (lock / unlock / trunk / panic)
• Dual-frequency: 315 MHz & 433 MHz in one remote
• Transponder inserts without disassembly — accepts small glass & carbon transponders
• Flip key blade not included (sold separately)
• Requires CR2032 battery (sold separately) — blades, batteries & transponders sold separately

• B-Series:

  These are universal remote keys with different physical appearances but the same core functions. They are used for replacing car, flip, and garage remotes and their frequency can be adjusted for various models. 

Why Buy from KEYSRUS?

We supply genuine KEYDIY products, trusted by locksmiths across Canada. Fast shipping, competitive pricing, and reliable support make KEYSRUS the go-to choice for professionals.