Product Spotlight: Southco R4-EM-9 Rotary Locks
Southco’s R4-EM-9 Series electromechanical rotary locks provide key features that are ideal for security monitoring on applications such as buses, RVs, point of sale product enclosures, and data storage/server enclosures. R4-EM-9 series locks are controlled by a microprocessor that provide the attached signal device with the lock status. For example, if the lock is connected to an electronic keypad the screen will show if the latch is open or locked.
R4-EM-9 Lock Settings
The R4-EM-9 rotary lock offers both auto relock or delayed relock settings.
Auto Relock
In this mode a signal device (such as a computer or keypad) is used to unlock the latch. When the door is pushed back to the closed position the latch automatically locks.
Delayed Relock
Like auto relock mode, the delayed relock mode uses a signal device to release the latch and open the door. However the delayed relock mode differs in that the signal device must also be used when closing the door. When the door is pushed shut the user must then use the signal device (keypad, computer, etc.) to reengage the lock and secure the door.
Additional R4-EM-9 Lock Features
- Simple two-hole installation
- Minimal power draw (energy efficient)
- Accommodation for existing control systems
- High electromechanical release load – (latch has a high resistance to breakage when force is applied.)
- Kick-out spring door assist (optional for delayed relock versions)
R4-EM-9 Part Configuration
Part configuration for the R4-EM-9 series electronic locks is relatively simple. By referring to the figure below you can identify the complete part number by selecting a trigger style and base mounting style. For additional details checkout the Southco R4-EM-9 rotary lock spec sheet.

Availability & Pricing for R4-EM-9 Series Electromechanical Rotary Locks
bisco industries is your local authorized distributor for Southco R4-EM-9 series locks. Visit biscoind.com to request pricing and availability at the click of a button.
Product Spotlight: Southco Electronic Locking Swinghandles
Southco’s H3-EM series electronic locking swinghandles are used widely to secure datacenters, industrial enclosures, medical equipment and many other applications. H3-EM swinghandles feature an energy efficient microprocessor controlled motor that provides state of the art locking capability. In addition, Southco’s electronic locking swinghandles are available with multiple manual key code options, card reader, and integrated biometric reader. These swinghandle locks are easily integrated into existing security systems and also offer remote monitoring and user tracking.
Key H3-EM Swinghandle Features
- Fits industry standard panel preps
- Easy integration with standard rack monitoring and security systems
- Integrated sensors for lock and latch status, monitoring and alarm functions
- Efficient gear motor design for low power consumption
- Momentary or continuous lock actuation with integrated manual override lock
bisco – Premier Distributor of H3-EM Electronic Locking Swinghandles
bisco has recently increased our stocking levels for Southco locks and latches including electronic locking swinghandles. Not only that, but bisco is a premier level Southco distributor enabling us to offer the most competitive pricing on the market. Our top selling H3-EM series swinghandles include H3-EM-60-10 and H6-EM-69-100. For product info, stock status, and pricing 24 hours a day, 7 days a week visit biscoind.com
