E2S STExB2LD2 Explosion Proof Beacons

E2S STExB2LD2 Explosion Proof Beacons


E2S STExB2LD2 Explosion Proof Beacons for Hazardous Area Signalling Applications

The STExB2LD2 are IECEx & ATEX approved multi-function LED Explosion Proof Beacons. The robust IP66 corrosion proof 316L stainless steel enclosure ensures the STExB2LD2 is suitable for all Zone 1, 2, 21 & 22 hazardous location signalling applications. The STExB2LD2 utilises an array of high power Cree® LED’s, orientated to optimise visibility in any direction. The beacon can be configured as a steady beacon for status indicator use, with a light output of up to 174 candela. Alternatively one of the five flashing modes, with a light output of up to 338 candela, may be used for warning applications. DC voltage versions feature three remotely selectable stages enabling multiple warnings to be signalled from one device. The field replaceable colour filter enhances the light output and is constructed from UV stable PC.


  • Operational Characteristics: 
– Multi-function LED Beacons.
– Ex d IIC zone 1, 2, 21 and 22 (IECEx).
– 7 flash patterns.
– Automatic synchronisation on multi-beacon systems.
– Three stage alarm, remotely selectable on DC versions.
– Line monitoring with blocking diode or optional EOL resistor.
– Light Intensity: 338cd(e).
– Flash Rate: 7 flash patterns, see table below.
– Protection Rating: IP66.
– Temp Rating (degrees Celsius): -50 to +70.
– Duty: Continuous.
– Cable Entry: 4 x M20 x 1.5mm (three stopping plugs included).
– Construction: 316L stainless steel housing, glass lens, polycarbonate colour filter, stainless steel guard and bracket.
– Approval: II 2 G Ex db IIC G b T6 (max ambient temperature +65 degrees Celsius), II 2 G Ex db IIC G b T5 (max ambient temperature +70 degrees Celsius), II 2 D Ex tb IIIC Db T85 degrees Celsius (max ambient temperature +70 degrees Celsius).
– Certificate: IECEx ULD 16.0017X.
– Weight: 6kg.
– Lens Colors Available: Amber, Blue, Clear, Green, Red, Yellow, Magenta.


Order CodeDescription
ESSR7711 18-50VDC, 240mA @24VDC, (specify lens colour).
ESSR7721 115VAC +/- 10%, 95mA, (specify lens colour).
ESSR7731 230VAC +/- 10%, 48mA, (specify lens colour).


Stage 1 (on board)Stage 2 (remote)Stage 3 (remote)
 Steady High Power Flashing 1Hz Triple Strike Flash
 Steady Low Power Flashing 1Hz Triple Strike Flash
 Flashing 1Hz 2 x Flash 2Hz Triple Strike Flash
 Flashing 1.5Hz Flashing 2Hz Double Strike Flash
 Flashing 2 Hz Triple Strike Flash Triple Strike Flash
 Double Strike Flash Steady High Power Triple Strike Flash
 Triple Strike Flash Flashing 2Hz Double Strike Flash

(please see attached PDF’s for further information)