["Reference Title: DC 12V 2CH RF 433MHz Wireless Switch Relay Receiver Module With Remote Control DC Motor Forward Reverse Controller\r\n\r\n\r\nDescription:\r\nDeleting existing remote controls data: \r\nPressing 8 times the learning for key button on the receiver board, the LED indicator on receiver board will turn off then turn on;\r\nThe existing remote controls are deleted successfully.\r\n \r\nMomentary Mode: \r\n1)Press once button (the learning for key on the receiver board), LED ( on the receiver board) turn off. LED is off now, before it is bright.\r\n2)Press \"A button\", then press \"B button\",LED ( on the receiver board) turn on, informs about setting \"Momentary mode\" successfully.\r\n \r\nToggle Mode: \r\n1)Pressing 2 times button (the learning for key on the receiver board), LED ( on the receiver board) turn off. LED is off now, before it is bright.\r\n2)Press \"A button\", then press \"B button\", LED ( on the receiver board) turn on, informs about setting \"Toggle mode\" successfully.\r\n \r\nToggle Mode 2:\r\n1)Pressing 3 times button (the learning for key on the receiver board),\r\nLED ( on the receiver board) turn off. LED is off now, before it is bright.\r\n2)Press \"A button\", then press \"B button\", LED (on the receiver board) turn on, informs about setting \"Toggle mode 2\" successfully.\r\n\r\nPlease Note:\r\nThis remote control only support the learning code (1527) of the receiver\r\nfor remote control using these chips: PT1527,EV1527, SCT527, HS1527, SCL1527, FP1527,EV1527 \r\nDo not use this remote control to clone other remote controls, or you will lose the built-in 1527 encoding.\r\n\r\nAttention:\r\n1. Please do not charged operation, you should shut off the power, and operation after testing and correct electricity.\r\n2. Please promptly change battery when remote control voltage is insufficient, (when the battery voltage is insufficient, generally get close transmitting).\r\n3. Please pay attention to avoid metal mask,large equipment ,strong interference electromagnetic filed when using wireless RF products,and avoid too short distance between the remote control and receiver board.\r\n4. Please avoid abnormal using of the product. Abnormal using will reduce product performance and life, when seriously it may damage the products and even make danger for your safe.\r\n\r\nSpecifications:\r\nModel: KR1202-4\r\nWorking Voltage: DC 12V\r\nQuiescent Current: 5mA\r\nWorking Frequency: 433Mhz\r\nReceiving Sensitivity: -104dBm\r\nFunction option: Momentary/Toggle\r\nModulation Mode: ASK\r\nMatching Mode: Intelligent Learning code\r\nOutput Mode: Dry contact /Voltage output\r\nWorking temperature: -30~+80℃\r\nPCB dimension: 68.2×48.2mm/2.69×1.90in (Approx.)\r\nQuantity: 1 Set (other accessories demo in the picture is not included)\r\n\r\nNote: \r\n1.Transition: 1cm=10mm=0.39inch\r\n2.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid.\r\n3.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!\r\n\r\nPackage includes:\r\n1 X Receiver module (KR1202-4)(include for Shell) (No retail package)\r\n1 X Remote Control (include battery)"]