Sigcom TMH-24G Tone Signaling Amplified Speaker, for use in hazardous areas, 24 VDC, grey
Sigcom TMH-24R Tone Signaling Amplified Speaker, for use in hazardous areas, 24 VDC, red
Sigcom TMH-120G Tone Signaling Amplified Speaker, for use in hazardous areas , 120 VAC, grey