LiftMaster 21-32781 Transformer, 230/208V to 24V AC

Deliver dependable low-voltage power where it matters most. The LiftMaster 21-32781 transformer is an open-frame transformer designed to convert 230/208V primary input to a stable 24V AC output, providing consistent power for access control, security and surveillance equipment. As a LiftMaster product, this transformer is built for commercial-grade reliability—supporting electric locks, card readers, cameras, sensors and other monitoring devices that demand clean, continuous power.

Its compact open-frame form factor makes it easy to mount inside control panels or equipment racks, reducing installation time and conserving valuable space. By using the manufacturer part 21-32781, integrators and facilities teams gain compatibility confidence and simplified maintenance for existing LiftMaster systems. The robust design helps reduce downtime and ensures sensitive security electronics receive the stable voltage they require for accurate operation.

Ideal for installers, system integrators and building managers, the LiftMaster 230/208V to 24V AC transformer is a practical choice for access control and surveillance deployments. Order or specify this transformer to upgrade or maintain reliable power for your security and monitoring systems.

• Reliable voltage conversion from 230/208V to stable 24V AC to keep access control and security devices operating without interruption
• Open-frame design for compact mounting inside control panels and equipment racks, simplifying installation and saving space
• Engineered for access control, surveillance and monitoring systems to provide consistent low-voltage power for locks, sensors and cameras
• Durable commercial-grade construction that minimizes downtime and maintenance for critical security infrastructure
• OEM LiftMaster part (21-32781) ensuring compatibility with existing LiftMaster systems and professional installations