... ZhiAnBao 315MHz/433.92MHz Wireless Remote Control Receiver Board Module ZR2-1Features :RF integrated circuit design, stable frequency, high sensitivity.Tech ... use IR remote controls. The remote contains an internal circuit board, processor, and one or two Light Emitting Diodes ( ... use IR remote controls. The remote contains an internal circuit board, processor, and one or two Light Emitting Diodes ( ...