SKU : F600120086000105
Categories : TRANSCEIVER AND COMMUNICATION ,  วงจรอินเตอร์คอม ,  ASSEMBLED , 
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Technical information
1. DC power supply 9 V.
2. You can adjust the volume of the speakers with VR1.
3. Can choose The work of the speaker to speak or listen. By adjusting the SW1
4. A LED indicator circuit.
5. Should not exceed 15 meters per cable SPK2., SPK1 not to exceed 50 cm.
6. Power pole switch circuit is not a shock.
7. Dimension 4.83 cm X 5.04 cm (1.9" X 1.98").