Product Name: Wireless TV Remote Controller Swtich Lpi-R21c Model NO.: LPI-R21C Battery Type: AAA Battery Voltage: 3V Transmission Distance: <50m Universal: Not Universal Certification: ISO9001, RoHS, FCC, CE Type: Button Signal Transmission: IR Remote Control Application: Household Appliances, Automatic Doors, LED Products, Industrial Machinery, Special Equipment, Audio / Video Players Trademark: LP, LPILED, LPINTE Transport Package: Bulk Specification: CE Origin: China Product Description IR remote controllerLPI-R21CSize: 145X42X18mmKeys: 21 keysButton letter: customizedHouse: ABS plastics, color customizedfunction IC protocol, NEC, RC5.... customizedBattery: AAAX2, DC3.0V1,Operation ForceEach key's operation force is in the range of: 180±40g.f and total deviation in 50g.f. base on Center.2,Key StrokeVertical press Key with force of 180g, the key stroke within the range of: 0.8±0.2mm base on Center.3,Straight Distance: Straight Distance above 8.0M4,Receiver Direction:Up Down Left Right Direction 15? at min.3M Distance.5,Room Temp:25ºC6,Room Humi:65~80% RH8,Power Voltage: DC 3.0V9,Test Environment illumination: 350Lux10,Leakage Currency: Under 3uA No key pressed11,Working Voltage DC2.2V~DC3.4V12,Contact Resistance :under 3K Ohms