Rotary Latch provides electronic access.

Press Release Summary:

Measuring 2.56 x 2.72 x 0.75 in., Model R4-EM features gear-motor drive and all-metal construction for vandal resistance. Microprocessor control accepts variety of electronic actuation signals including proximity cards, hard-wired numeric keypads or swipe-card terminals, smart-reader devices, biometric devices, and remote computer or network security system signals. Designed to install with 2 bolts, latch operates on 12-24 Vdc with current draw during actuation of less than 500 mA at 12 Vdc.

Original Press Release:

New Latch Integrates Electronic Access Convenience with Secure Rotary Latch Performance

Concordville, PA, January 23, 2009 - The new Southco® R4-EM electronic rotary latch combines robust rotary latch security and electronic access convenience in a single integrated solution. Unlike a standard mechanical latch linked with a separate solenoid actuator, the gear-motor drive in the R4-EM delivers a better feel to latch actuation and is more efficient in terms of lower power requirements and higher load capability.

This provides versatility for performance across a wide range of applications from storage compartments on truck, bus, off-highway, construction, and agricultural vehicles, to RV baggage doors, to storage compartments or access doors on medical, electronics, self-service, and industrial equipment.

The compact integrated latch design also makes the R4-EM easy to install, operate, and maintain. The 2.56" x 2.72" x 0.75" (65 x 69 x 19mm) housing requires minimal space and minimal protrusion inside the compartment, and installs simply with just two bolts to keep installation costs low. Its proven mechanical design and all-metal construction provide excellent vandal resistance with long-term durability and reliability.

The latch operates on 12 to 24VDC with a current draw during actuation of less than 500 milliamps at 12VDC. Microprocessor control accepts a variety of electronic actuation signals including wireless devices such as proximity cards or RF key fobs, hard-wired numeric keypads or swipe-card terminals, smart-reader devices, biometric devices, and remote computer or network security system signals. An integral microswitch option is available to provide a "latch opened/latch closed" status signal for remote monitoring.

For more information about the Southco R4-EM electronic rotary latch and its versatile configuration options, visit, e-mail the 24/7 customer service department at, call 610-459-4000; or fax to 610-459-4012.

Southco is a leading global provider of engineered access solutions, including latches, locks, captive fasteners, hinges, handles, and other accessories for applications in the marine, networking, telecommunications, computer, automotive, aerospace, mass transit, off-highway/construction, RV/caravan, industrial machinery and HVAC industries.

Southco is strongly focused on customized engineering solutions and global support for its key customers. The company aspires to be a virtual engineering center for its customers' engineered-access solutions and is committed to providing outstanding quality and overall satisfaction. Southco's promise to its customers is to connect, create and innovate to provide the best solution for every access engineering problem.

More from HVAC

All Topics

COVID-19 Response Suppliers COVID-19 Response:
Can Your Company Help Provide Critical Supplies?

We are using the power of our platform to aid in the mass shortage of critical supplies. If your company can help provide supplies, capabilities, or materials for products such as N-95 Masks and Tyvek SuitsPlease let us know.

COVID-19 Response Suppliers