Exloc Instruments UK Ltd is an authorised supplier of E2S Warning Signals – the world’s leading manufacturer of ATEX certified audible and visual warning devices for hazardous areas. Our E2S product range includes intrinsically safe sounders, LED beacons and combined alarm units for Zone 0 and Zone 1 applications, alongside explosion-proof (Ex d) horns and strobes designed for Zone 1 and Zone 2 environments. Each E2S unit is engineered for reliability, durability and simple installation in demanding industries such as oil & gas, chemical processing, and manufacturing. Whether you need compact low-current intrinsically safe alarms or high-output explosion-proof signalling solutions, Exloc offers a comprehensive E2S range of products – fully approved to ATEX, IECEx and UKCA standards to ensure safe, compliant operation across your site.

Intrinsically Safe Sounders

IS-A105N Alarm Sounder 1-12-020

Like all IS‑A105N units, the IS-A105N Alarm Sounder 1-12-020 delivers a 105 dB(A) output at 1 metre with 49 programmable tones. The sounder is certified to ATEX, IECEx and FM standards for Zone 0 installations and Class I Division 1, ensuring compliance in hazardous industrial settings. Built from flame‑retardant ABS and sealed to IP66, it features overload and reverse‑current protection and an auto‑synchronisation function for multi‑sounder systems. Dual cable terminations allow straightforward loop‑through wiring, and mounting lugs plus a BESA fixing pattern simplify installation. The 16–28 V DC operating range and low current draw make the 1‑12‑020 ideal for energy‑efficient signalling across fire, security and process‑control applications.

IS-MA1

The IS‑MA1 is a compact 100 dB(A) intrinsically safe alarm sounder suited to hazardous areas requiring Zone 0 and Class I Division 1 certification. It offers 49 tone options and three alarm stages, with adjustable volume to match local ambient noise. Approvals include ATEX, IECEx, EAC Ex and FM, and a mining version (IS‑mA1M) is available for Group I applications. Despite its small size, the unit provides input overload and reverse‑current protection, end‑of‑line resistor certification and automatic tone synchronisation. Operating from 16–28 V DC via a zener barrier, it draws only 25 mA typical at 24 V and carries an IP65 flame‑retardant ABS enclosure. The IS‑mA1 suits industrial control panels and small equipment enclosures where space is limited but reliable audible warning is essential.

Intrinsically Safe Beacons

IS‑L101L LED Beacon

The IS-L101L unit is an intrinsically safe field mounting beacon which provides a bright flashing warning signal. It uses six high‑intensity LEDs and a prismatic lens to produce a bright double‑flash warning. The unit is certified for Zone 0/1 by ATEX and IECEx and can operate standalone or combined with an IS‑A105N sounder via a common zener barrier. With overload protection and reverse‑current protection built in, it offers reliable operation across temperatures from –40 °C to +60 °C. The beacon’s 16–28 V DC input and low 25 mA current draw make it efficient for battery‑backed systems. Users can specify lens colours (red, amber, blue, green or white) to match hazard‑signalling requirements.

IS‑MB1

The IS‑mB1 is a compact intrinsically safe LED beacon designed for use in hazardous areas. Its prismatic lens and array of six high‑intensity LEDs deliver a double‑flash at 1 Hz or 2 Hz, providing an effective intensity of 23 candela. Certified to ATEX, IECEx, EAC Ex and FM standards for Zone 0 and Class I Division 1 applications, the beacon offers input overload protection, reverse‑current protection and end‑of‑line resistor certification. Available LED colours include red, amber, blue, green and clear. The IS‑mB1 operates from 16–28 V DC via a zener barrier, drawing around 25 mA typical at 24 V. Housed in an IP65 ABS/PC enclosure with stainless‑steel fixings, this 0.32 kg beacon is ideal for space‑constrained locations where clear visual signalling is required.

Intrinsically Safe Combined Units

IS‑MC1-R

The IS‑mC1‑R MiniAlert combines a 100 dB(A) sounder and LED beacon within a red enclosure and allows any standard lens colour to be specified. Certified to ATEX, IECEx, GOST‑R and FM standards, it provides an intrinsically safe solution for Zone 0 applications. A single zener barrier powers both functions, and the sounder can operate with or without the beacon, offering flexible warning strategies. Features include overload protection, end‑of‑line resistor certification, auto‑synchronised sound output and a prismatic lens to optimise LED performance. The alarm side offers 49 tones and three stages, while the beacon delivers a 23‑cd double flash at 1 Hz or 2 Hz. Operating from 16–28 V DC at roughly 30 mA combined current, this IP65‑rated unit is ideal for compact hazardous‑area installations.

IS‑DL105L

The IS‑DL105L‑R is an intrinsically safe combination unit featuring a 105 dB(A) alarm horn and a high‑intensity LED beacon housed in a red marine‑grade aluminium enclosure. Lens colours can be specified (red, amber, blue or green). The device is certified to ATEX and IECEx standards for Zone 0, with additional approvals from FM and Ex EAC. Key features include overload and reverse‑current protection, a prismatic lens for optimised LED output, auto‑synchronised sound output and duplicate cable terminations for daisy‑chaining. An alarm‑accept function allows operators to silence the sounder for 5 seconds to 2 hours while leaving the beacon active. Running from 16–28 V DC at about 25 mA typical, the IS‑DL105L‑R/* is IP66 rated and built to withstand harsh process environments.

Explosion Proof Sounders

D1xS1F 115 dB(A) Alarm Horn Sounder

This unit is a high‑output explosion‑proof sounder capable of 115 dB(A) at 1 metre, with 64 tones and four selectable alarm stages. Its LM6 aluminium enclosure is approved for Class I/II Division 1 and Zones 1, 2, 21 and 22, meeting IP66/67 and Type 4/4X requirements. Features include positive/negative line switching, automatic synchronisation, triple cable entries and a ratchet‑adjustable stainless‑steel bracket. Available in 24 V DC and 100–240 V AC versions, the D1xS1F suits hazardous industrial environments needing robust audible warning with functional safety compliance.

Explosion Proof Beacons

D1xB2X05 Explosion Proof Xenon Strobe Beacon

The D1xB2X05 features a corrosion‑proof LM6 aluminium enclosure with IP66/67 and Type 4/4X ratings and produces a 5‑joule xenon flash. Approvals include ATEX, IECEx, UL/cUL, EN54‑23 and DNV, making it suitable for global hazardous‑area applications. Four flash rates and automatic synchronisation on multi‑beacon systems ensure flexible signalling. The beacon uses a field‑replaceable UV‑stable lens filter and includes a stainless‑steel guard for protection. Voltage options span 12/24/48 V DC and 115/230 V AC. It is an ideal visual alert for fire, gas and process‑safety systems in explosive atmospheres.

Explosion Proof Combined Units

D1xC1X05R 110 dB(A) Radial Alarm & 5 J Strobe

The D1xC1X05R 110 dB(A) Radial Alarm & 5 J Strobe 1‑23‑055 combines a 110 dB(A) omni‑directional horn with a 5‑joule xenon strobe beacon in a robust LM6 aluminium enclosure. Approved for Class I/II Division 1 and Zones 1/2/21/22, the unit offers 64 tones, four remotely selectable alarm stages and Class D amplification for high output at low current. The strobe features multiple flash options and provides peak candela up to 500 000 cd. The enclosure is IP66/67 and Type 4/4X rated, and functional safety compliance (SIL 1/2) is achieved. Versions are available for 24 V DC and 110/230 V AC supplies, making the D1xC1X05R a versatile solution for hazardous‑area signalling.