Cranford Controls

IS Sounder Beacon

Product Overview

The IS-mC1 is a compact combined 100dB(A) alarm sounder and L.E.D. beacon – only one Zener barrier or galvanic isolator required to run both sounder & beacon or alternatively the unit can be operated as individual signals.


  • Approvals include ATEX, IECEx and GOST-R for Zone 0 applications and FM approval for Class I Division 1 and Class I Zone 0 applications.


Voltage 16-28vdc via Zener barrier or galvanic isolator
Combined Current Approx 30mA typical when powered from 24v supply via 28v 300Ohm Zener barrier.
Ingress Protection IP65
Rating Continuous
Housing Material UL94V0 & 5VA FR ABS & PC
Housing Colour RAL3000 Red
Fixings Stainless Steel
Cable Entries 2 x M20 Clearance Gland Knockouts. Custom configurations also available.
Terminals 0.5 to 2.5mm²
Operating Temperature -40° to +60°C
Storage Temperature -40° to +70°C
Relative Humidity 90% at 20°C

*All candela data is representative of performance with amber lens at optimum voltage.

Part Numbers

305-007 Minialert Sounder/Beacon – Red Body/ Red Lens
305-010 Minialert Sounder/Beacon – Red Body/ Amber Lens
305-011 Minialert Sounder/Beacon – Red Body/ Clear Lens