SR40/SR60 – Explosion Proof Loudspeaker/Ringer.

The SR40 and SR60 represent Guardian Telecom’s explosion-proof loudspeaker and ringer units designed for high-power audible notification in hazardous environments where flammable gases, vapors, or dust may be present. Certified for Class I Division 1 (Groups B, C, D), Class I Zone 1 (Group IIB+H2), Class II Division 1 (Groups E, F, G), and Class III locations, these robust devices generate up to 110 dB for effective communication in the most demanding industrial settings.

Versatile Options in One Device

The SR40 offers versatile configuration options as a loudspeaker for paging applications, a loud ringer to signal incoming phone calls, or both functions combined in one device, while the SR60 provides 60 watts of high-power paging capability for large-area coverage in refineries, chemical plants, drilling rigs, mines, and other hazardous industrial environments.

  • Comprehensive explosion proof certification
  • Generates up to 110 dB for effective audible notification in high-noise industrial environments and large-area coverage
  • Engineered to contain explosions within the unit and prevent ignition of hazardous atmospheres, ensuring safety and long-term reliability in the harshest conditions
  • Versatile Configuration options (SR40)
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Explosion Proof Loudspeaker/Ringer Spec Sheets.

EXPLR SERIES V2

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Parts and Accessories.

Ordering Part Number Model Description
P7240 SR40 Ringer, 24VAC
P7241 SR40 Paging Loudspeaker/Ringer, 24VAC 15 Watt
P7243 SR40 Ringer, 230VAC
P7244 SR40 Paging Loudspeaker/Ringer, 230VAC 15 Watt
P7245 SR40 Paging Loudspeaker, 30 Watt 70V
P7246 SR40 Paging Loudspeaker with DC FIlter Circuit 30 Watt 70V
P7247 SR40 Paging Loudspeaker, 30 Watt 16 Ohm
P7248 SR40 Ringer, 12VAC
P7249 SR40 Paging Loudspeaker/Ringer, 12 VAC 15Watt
P7250 SR40 Ringer, 120 VAC
P7251 SR40 Paging Loudspeaker/Ringer, 120 VAC 15 Watt
P7260 SR60 Paging Loudspeaker, 60 Watt 70V
P7262 SR60 Paging Loudspeaker, 60 Watt, 16 Ohm
Ordering Part Number Description Note
Guardian Telecom provides rugged, intelligent communication and monitoring systems built for the harshest environments. When safety, security, and uptime matter most, we’re your first line of defense.
Guardian Telecom provides rugged, intelligent communication and monitoring systems built for the harshest environments. When safety, security, and uptime matter most, we’re your first line of defense.
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