Uniden UH5045 Owner's Manual page 7

Controls/Connectors
Standard Microphone
16
15
17
30
21
31
Controls and Connectors
15 CALL - Call Tone Button
16 INST - Instant Channel Button
17 PTT - Push To Talk Button
21 MICROPHONE
30 RJ45 type plug
31 Front MIC Jack Cover
7
UNIDEN UH5045 UHF CB Transceiver