Use: Electric Door,Lighting,Automated curtains,Universal Wireless Communication: RF Channel: 1 Frequency: 433 MHz Model Number: SRK061 Decoder IC: learning code/fixed code/rolling code working voltage: DC12V-24V AC/DC learning code: all the code like 1527 527 2240 fixed code: 2262 2260 5326 and so on rolling code: 301 300 201 200 and so on Frequency: 433mhz Distance: 50-100M color:As shown Material:PC+Metal+Plastic Package Contents: 10 x RF Wireless Remote Control Switch Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.