Note:1. The remote control is the learning code 433.92MHz (cannot copy). It mainly learns the 1527/2262 learning chip. It cannot learn if it is not a learning chip, nor can it learn a learning chip which is not 433.92MHz.2. Learning method: long press the button of the receiving device for 5 seconds, then long press any button on the remote control for 3 seconds.3. After learning, dont use the remote control too frequently. Its better to press the second time after 1s after the first press.4. The number of learning remote controls is determined by the receiving device. For example, SONOFF RF R2 can learn 9 remote controls. When learning the tenth one, the first remote control will lose its remote control effect. If the receiving device can only learn one remote control, then when learning the second one, the first one will lose the remote control effect. Other SONOFF products with RF function also operate in the same way.5. There should not be too many metal partitions between the remote control and the receiving device, otherwise it will affect the signal reception.Overview:Sonoff 4CH Pro R3 ITEAD integrates with a 433MHz RF receiver module, making it possible for the switch to be controlled by RF Remote. It's a 4 channels universal WiFi wireless smart switch for your smart home system to remotely and automatically turn on/off home appliances and electronic devices by for Android/iOS App eWeLink or 433MHz RF Remote. It also supports timing turning on/off the appliances at a specified time, and share to others so that you can control your smart home together with your family. You can also voice control your home appliances by Amazon Alexa, and for Google Home/Nest, and enjoy intelligent life and make your home smarter.Features:*App Support: Free iOS and for Android mobile App eWeLink.*Sync Status: Real-time device status provided to App.*Remote ON/OFF: Turn 4 electrical devices on/off remotely from anywhere.*Independent control: Control each gang separately in APP eWeLink.*Remote Control: Supports controlled by 433MHz RF Remote Controller. (433MHz RF remote controller included)*3 Working Modes: Supports switching among inching/interlock/self-locking modes.*Timing: Supports 8 enabled countdown/single/repeat timing tasks to turn on/off at specified time.*DIN Rail Mounted: Great for industrial control.*Voice Control: Compatible perfectly with Amazon Alexa, for Google Home, for Google Nest.*Share Control: Control your smart home together with your family.WiFI Switch Specifications:Power Supply: 90V~250V ACMax. Current: 10A/gang, 16A/TotalMax. Power: 2200W/gang, 3500W/TotalOperating Temperature(recommended): 0oC-40oCOperating Humidity: 5%-90%RH, Non-condensingTransmission mode: Wi-Fi 2.4GHz communicationWireless Standard: 802.11 b/g/n & 433MHzSecurity Mechanism: WPA-PSK/WPA2-PSKEnclosure Material: Fire-retardant ABS V0Gang: 4Product Size: 145*90*34 (mm)Remote Controller Specifications:Operating frequency: 433MHzEncoding: fixed code (1527 Chip)Power supply: 1* 12V 27A Batteries (included)Efficient distance: 20M (in open area)Material: Metal + PlasticButton: 4Panel: slide coverSize: 5.5*3 *1.8cmPackage Information:Package Size: Approx. 16 * 10 * 6cm / 6.3 * 3.9 * 2.4inPackage Weight: Approx. 263g / 9.3ozPacking List:1 * Sonoff 4CH Pro R3 ITEAD1 * RF 433 Remote Controller1 * User Manual