Model CBS-II. Designed for teaching and research. Use only with electrophoresis chambers in a constant-voltage mode. Two power supplies in one. Variable power control knobs regulate a constant voltage to 2 separate channels. Channel I can be operated independently or simultaneously with Channel II. Durable casing, and 3-wire power cord make this unit reliable and safe. Also features analog meter capable of reading both channels, and power switch/light. Compatible with all of our gel electrophoresis chambers except 21-3635 and those used in the Exploring Electrophoresis Series. Specifications: Constant voltage, 2 terminals. Input: 110 or 220 V. Output: max 200 mA; voltage max 150 V per channel.