Profile: Diamond H Controls Ltd. is a manufacturer of domestic appliance controls. We are an ISO 9001: 2000 certified company. We provide gas controls, electric products and assembly services. Electric products include energy regulators, electric thermostats and 60TH thermostats. We offer a comprehensive range of gas and electronic controls designed to exceed the vision of appliance manufacturers. Our ET5* series low profile thermostats have been designed to meet the demands of modern cooking appliances where control compartment space is limited.