Speaker-microphone QMPS

• Can prevent cross talk of different voice environments by selecting an audio signal fit for the specific environment and condition • Offers both Binary and Bit input mode options with 30 pre-recorded sounds • Binary input mode has built-in 30 messages that can be played with switch for sound selection • Bit input mode is organized into 6 groups of 5 sound tones for a total of 30 sound tone options. Playback can be selected from one of the 5 tones in each group (MP3 file with bit input mode) • Volume adjustment and sound selection switches located inside the unit • SDcard type can play MP3 voice messages, user can select and change the sound message after record it • Sound volume : Max 98dB at 1m • Materials : Housing-ABS, Cover-ABS • Ambient operating temperature : -25°C to +50°C • Protection rating : IP54 • Certificates : CE Compliant, UL Listed • Compliant with RoHS directive