Command Access PS220B – 2A 24VDC Power Supply with Battery Backup for Electric Locks

Product Description

The Command Access PS220B is a high-performance power supply designed to support electric locks, solenoid exit devices, and latch retraction hardware. Delivering 2 amps at 24VDC with advanced battery backup capability, it ensures continuous and reliable operation in commercial access control systems.

Specifications

• Model: PS220B

• Input Voltage: 120 VAC, 60 Hz

• Input Protection: 2 Amp Fuse @ 250VAC

• Output Voltage: 2A @ 24VDC with 2 solid-state outputs

• Power Tap: 0.5A @ 24VDC

• Backup Power: Supports 2 × 12VDC 7AH batteries (not included)

• Fire Alarm Integration: Fire alarm link compatibility

• Voltage Controls: Over-voltage protection and adjustable output trim pot

• Battery Charging: Regulated, independent battery charging

• Uninterrupted Power: Automatic switchover to battery backup

• LED Indicators:

  • Red: A/C Power

  • Green: D/C Output

  • Orange: Battery Output

Features and Benefits

• Delivers consistent power to electric locks and latch retraction systems

• Solid-state outputs protect system from shorts and surges

• Door-mounted LED power indicator for on-site monitoring

• Easy-to-wire euro connectors with removable design

• Linear output provides optimal inrush/hold current for solenoid devices

• Supports up to 2 locks or solenoid motor kits

• Built in the USA for assured quality and reliability

Mechanical Details

• Enclosure Dimensions: 13″ W × 15.5″ H × 5″ D

• Knockouts: 1/2″ & 3/4″ knockouts on all sides

• Cover: Hinge-less removable (cam lock not included)

• Battery Space: Accommodates two 12VDC 7AH batteries

• Weight: 14 lbs (15 lbs shipping weight)

Environmental Specifications

• Temperature Range: 0 to 49° C (32 to 120° F)

• Maximum Humidity: 85% non-condensing

Additional Information

The PS220B is engineered to operate reliably in demanding access control environments. It offers clean, regulated power and seamless battery backup to ensure uninterrupted function of exit devices and electric locking systems during power loss. Suitable for schools, commercial buildings, and public facilities.