ELECTRONIC AUTOMATIC GAS PRIMARY CONTROL MADE UP OF PRINTED CIRCUIT BOARDS AND OTHER ELECTRICAL COMPONENTS (EG RESISTORS AND CAPACITATORS) ALL LINKED TOGETHER AND CONTAINED IN A PLASTIC CASING FOR USE IN DOMESTIC HEATING BOILERS. THE CONTROL HAS TWO FLASH PROGAMMABLE MICROCONTROLLERS AND VARIOUS CONNECTORS. APPROX MEASUREMENTS 185MM X 140MM ORANGE IN COLOUR.

CLASSIFICATION IS DETERMINED ACCORDING TO GIRS 1 AND 6. CN CODE: 90321020 FOR THERMOSTATS, ELECTRONIC. SECTION XV1 NOTE 1(M) & CHAPTER 90 NOTE 7A