Fangrui Product Details Product Introduction: A Radio Made With A Ready-made Fm Radio Module. Just Solder The Circuits Of The Power Amplifier And Level Indicator. The Power Amplifier Circuit Is Composed Of Device Pam8406, With A Maximum Output Power Of 3w. The 2-way Level Indicator Is Composed Of Ka2284. Supply Voltage: 5.0v-5.5v, Current 500ma-2a Power Amplifier + Level Indicator Pcb Board Size: 9.5cm X 2.9cm Shell Size: 11.9cm X 6.6cm X 6.6cm Speaker: 4 Ohms 5w Amplifier Max Power: 3w Channel: Dual Channel Fm Receiving Frequency Adjustment Range: 87.0mhz-108.0mhz Precautions: Do Not Touch The Back Components Of The Module During Work To Avoid Affecting The Normal Operation Of The Module Or Causing A Short Circuit And Burning The Module. This Module Is A Radio-sensitive Device, And Interference From The Power Supply Or Nearby May Affect The Normal Operation Of The Module. This Is A Diy Kit And Needs To Be Assembled By Yourself. Different Batches May Have Differences In Electronic Components, Which Does Not Affect Use. Colour: