Secure Meters Ltd. Offers Maximum Demand Controller. Secure Meters Ltd. Is an ISO: 27001 and ISO: 14000 certified company. Maximum Demand Controller is available as `Maxchek`. It is specifically designed for industries to keep a check on their maximum demand. It gives an alarm when demand approaches a preset value and also switches off non-essential loads in a logical sequence. Considerable savings can be realised with the use of Maximum Demand Controller. It is applicable in the areas of Industrial consumers, HT consumers and Commercial establishments.