This Thermo EC135-90 EC Electrophoresis Power Supply is in great condition and is guaranteed to be fully functional. These power supplies came from a local lab that had surplus inventory and may show slight aesthetic signs of normal use. We urge customers to view all photos as they show overall condition, included accessories and functionality. Please feel free to contact us with any questions. Model Number: EC135-90 Description: The EC135-90 is designed to operate in constant voltage or constant current, featuring a continuously variable output in either mode. The EC135-90 automatically crosses over from one mode of operation to the other when the preset limit has been reached. The EC135-90 is a compact and highly versatile power supply for PAGE SDS-PAGE, DNA or RNA submarine gels. Specifications: Operating Voltage Range: 500 V Operating Current Range: 500 mA Maximum Output Power: 250 watts Output Modes: Constant voltage or constant current with automatic crossover Number of Output Terminals: Four sets of recessed 4 mm connectors (female) Safety Interlock Load sensing shut-down-on-disconnect Key actuation necessary to activate high voltage In event of a power failure, automatic restart is provided Timer: Dual-functing up/down timer, 99 hr 59 min which deactivates high voltage upon reaching zero time remaining in the count-down mode Dimensions (W x D x H): 225 x 303 x 145 mm Plug Style: (120000000000000V) Leads Not Included