This Canfield Connector miniature electronic timer makes any valve, with the DIN 43650/ISO 4400 form "A" electrical interface, able to be a compressed air system condensate removal valve. This unit installs in a modular form between an existing coil and connector. No new wiring is necessary. Retrofits on virtually any installation. It works with the flow/brand valve of your choice. The off and on times are easily adjustable and indicator light shows status.