When ordering from the US, parcels may be subject to import tax and duty charges, which the buyer is responsible to pay. Centent Silicon Controlled Rectifier SCR Drive Speed Control PN#- CN4A-12 This product data sheet is originally written in English. Centent Silicon Controlled Rectifier SCR Drive Speed Control PN#- CN4A-12 Here you go. Hard to find this model. More info from manufacturer: The CN4A12 and CN4A24 are silicon controlled rectifier (SCR) type speed controls for use with 12 / 24 VDC permanent magnet motors. A 12 / 24 VAC secondary transformer and a 5 Kohm potentiometer are all that's required to operate the CN4A12 / 24 with your motor. The CN4A12 / 24 will regulate the motor speed to +/- 10% accuracy over a 25 to 1 speed range. The drive is a single quadrant (single direction) speed control. DC permanent magnet motors having stall currents of 4 Amps or less are suitable for use with the CN4A12 / 24. An epoxy encapsulated package using push-on type crimp wire connectors make for a reliable and simple to use speed control. Get this today Will ship international. FREE USA SHIP please ask questions. Please look at pictures. Centent Silicon Controlled Rectifier SCR Drive Speed Control Here you go. Hard to find this model. More info from manufacturer: The CN4A12 and CN4A24 are silicon controlled rectifier (SCR) type speed controls for use with 12 / 24 VDC permanent magnet motors. A 12 / 24 VAC secondary transformer and a 5 Kohm potentiometer are all that's required to operate the CN4A12 / 24 with your motor. The CN4A12 / 24 will regulate the motor speed to +/- 10% accuracy over a 25 to 1 speed range. The drive is a single quadrant (single direction) speed control. DC permanent magnet motors having stall currents of 4 Amps or less are suitable for use with the CN4A12 / 24. An epoxy encapsulated package using push-on type crimp wire connectors make for a reliable and simple to use speed control. please ask quest Brand Centent Model H7 MPN cn4a12