Cooksir 30 Inch Electric Cooktop Touch and Knob Control Cooksir 4 burner electric cooktop with 30 inch wide has plenty of space between the heating zones for pots and pans. Your Safety is Our Priority 99-Min Timer If you are buzy, you can set a timer for this stove. Once the time ends, the cooktop will shut down automatically. Residual Heat Indicator When the temperature of the glass is too high, it will remind you. So please do not touch it. Safety Lock Once the hob is locked, all the buttons except ON/OFF key will be disabled. To cancel it, hold the safety lock key for at least 5 seconds. Pause Function When someone phone you when you are cooking, you can press the pause key to take a break from cooking. Share Cooking Fun with Your Family With 4 heating zones, you can cook four dishes at the same time. Suitable for a big meal for family gathering or home party. 9 Power Heating Levels To adjust the heating levels, please twist the knob for the corresponding burner. The larger the heating zone, the faster the heating speed. Notes All such high-current products on the market does not have a plug, need a professional electrician for wiring.Built-in Ceramic Hob 220-240v hard wired, the American home voltage is 110V, which is not a problem, because according to the wiring diagram we provide, you can have 220V-240V voltage. Absolutely safe.Please install according to the user manual. Cooksir 30 Inch Electric Cooktop Collection 30 inch electric cooktop 30 inch electric cooktop 30 inch electric cooktop Heating Zone 4 Heating Zone 4 Heating Zone 5 Heating Power 6700W Heating Power 7400W Heating Power 8400W Control Type Knob & Touch Control Type Knob Control Type Touch Functions Timer, Safety Lock, Pause, Dual Ring, Residual Heat Indicator Functions Residual Heat Indicator Functions Timer, Safety Lock, Pause, Dual Ring, Residual Heat Indicator Voltage 220-240V Voltage 220-240V Voltage 220-240V