• Gaitronics Cohort 616 Phone System
• Sanyo EKS 6120 Phone System
• Premier Telecom 1A2 Phone System

CMX Phone Systems:

• CKS-308
• CKS-616
• CKS-408
• CKS-816
• CKS-1224

Tie Phone Systems:

• EK-612
• Modkey 16
• Modkey 1032
• DS-01
• Onyx VS

Executone Phone Systems:

• Encore CX 512
• Encore CX 816

Siemans Telplus Phone Systems:

• Telplus 816
• Telplus 1224

Trillium Phone Systems:

• Panther 612
• Panther 1032
• Panther II

Vodavi Phone Systems:

• Starplus 308EX
• Starplus 616EX
• Starplus 1224EX

The VPB-260 is a fully filtered battery back-up power supply. The input and both outputs are fuse protected. The charger circuit output is floating with respect to ground. The charging circuit provides a constant voltage and current limited to 1.5 amps to the two Gel Cells. There is a "power on" LED that is illuminated when the supply is connected to the AC power source. There is also a test button for testing the batteries. When pressing the button the LED will illuminate if the batteries are fully charged.