Wireless remote control lamp holder for E27 bulb. Change your bulb with this lamp holder, could remote control your lighting system. ON/OFF two buttons on the remote controller to control the lamp ON/OFF. Suitable for family, office, factory etc.Features:Wireless remote control lamp holder for E27 bulb. Up to 20 meters remote control distance in open ground. Adopt Surface Acoustic Wave (SAW) frequency stabilization technology, frequency is ultra-stable and reliable. Imported IC coding, there are millions of different codes, and the neighbors will not cause similar products using the cross-holding phenomena. Easy installation and convenient for home use. Specifications:Condition: NewStandby Current: 220V 50uA (0.015WOperating Voltage: AC180~250V (50/60Hz)Operating Frequency: 315 MHZControl Distance: 10Indoor partition wall Shell Material: Plastic Size: Approx. 11 x 7 x 3cm / 4.33 x 2.76 x 1.18inch (Height x Maximum diameter x Minimum diameter)Color: As picture shownWeight: Approx. 83gBattery: 12V, 23A (not included)Package Includes:1 x Lamp Holder1 x Remote Controller (battery not included)1 x BracketNote:1. Please allow 1-2mm error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.3.Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering.