Description: 100% brand new and high quality Features: It can meet the requirements of large air conditioners and water heaters, making using safer and more stable. It can prevent ineffective waste and better power saving to extend service life of the power switch. Smart light shooting indicator reminds the remaining battery electricity in time to prevent it from running out. On-off power type when the card is plugged in or pulled out. Delay time can be customized and designed. It can act as the total electrical power control. It is an ideal and perfect choice for independent building. Specifications: Material: PC Working voltage: 220-250V SIZE: 8.6x8.6cm/3.39X3.39inches Load power: 6600W (30A) Delay time: On-off Type;Delay can be designed and customized. Application: Hotels, villas, residential apartment, flat, office building and other indoor places. Package includes: 3 Pieces Cards 1 Piece Power Switch Note: Please allow 1-2cm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Live products need professional electrician wiring, please disconnect the main power before operation.