2Pcs DIY Electronic Intercom Kit DIY Walkie Talkie Interphone Learning Kit

The 6 wires ， which are connected by way of access to the circuit as follows :

120 mm long wire: battery anode to the circuit board (GND-) office
100 mm long wire: battery positive to the circuit board (VDD +) Department
Two 80 mm long wire: the ends of the speaker to a circuit board (SPK2) at
Two 50 mm long wire: an ear to one end of the antenna wire of L1， one is a toggle switch in the middle -to- circuit board (SW2) place

Circuit schematic and assembly instructions:

Click here to download

Package included:

2 x DIY electronic intercom