... type: learning type or rolling type Volt: DC 5V remote Receiver, wireless receiver, low cost remote controller, 433/315Mhz, 4ch, ID record, ... rolling/studing code YS-CWC9 Superheterodyne receiver boardReceiving sensitivity: -110dBmWorking frequency: 315MHz or 433.92MHz Modulation ... system;* Remote controlling for home appliances, YS-CWC9 remote receiver with 315/433.92mhz