The CTM8251KAD with Communication Modules Through Hole RoHS from Taisko is a new generation single-chip CMOS wireless transceiver. It is an integrated low-power radio frequency (RF) transceiver for the globally available 900 MHz frequency band with a data rate to 40 kbps. It is designed for robust and easy-to-use wireless communication between microcontrollers, such as Arduino and Raspberry Pi. The transceiver offers an integrated power amplifier, receiver chain, and baseband processor, providing a very low power consumption for a range of up to 250 meters. With a crystal clear audio, adjustable output power, and a full-duplex communication channel—the transceiver is small yet powerful and cost-efficient.