E2S D1xS1F Explosion-Proof Alarm Horn Sounder

Name: E2S D1xS1F Explosion-Proof Alarm Horn Sounder – Datasheet & Quote
Brand: E2S
SKU: D1xS1F

A 115 dB(A) flameproof alarm horn with 64 tones and four remote stages

The E2S D1xS1F is an explosion-proof alarm horn sounder from the D1x range, with a sound output of up to 115 dB(A) at 1 metre. It has 64 selectable alarm tones (UKOOA / PFEER compliant) and four remotely selectable alarm stages, with positive or negative stage switching on DC units and automatic synchronisation when several sounders are used together. The marine-grade aluminium enclosure is Type 4/4X and IP66/67, with a threaded flameproof joint, triple cable entries, duplicated pluggable terminals and a ratchet-adjustable A4 316 stainless-steel bracket.

Technical specifications

Parameter	Specification
Sound output	Maximum 115 dB(A) at 1 m (106 dB(A) at 3 m); nominal 110 dB(A) +/-3 dB, tone 4; Class II version 98 dB(A) maximum
Tones and stages	64 tones; 4 alarm stages; full-range volume control; effective range 125 m at 1 kHz
Supply	24 VDC (11.5 to 54 VDC) or 230 VAC (100 to 240 VAC)
Current (24 VDC)	185 mA nominal, 221 mA maximum, in-rush 815 mA within 4 ms; 230 VAC 48 mA nominal, 80 mA maximum
Enclosure	Marine-grade LM6 aluminium, chromate and powder-coated, red or grey; IP66/67; Type 4 / 4X / 3R / 13; under 2 litres
Cable entries and terminals	2 x M20 and 1 x 1/2 in NPT (thread adaptors available); terminals 0.5 to 2.5 mm2 (20-14 AWG); M5 earth stud
Line monitoring	Blocking diode included; EOL 500 ohm 2 W or 3k3 ohm 0.5 W resistor or diode (DC)
Temperature	Installation and storage -55 to +85 C
Weight	4.00 kg (8.80 lb)
Hazardous-area coding (as printed)	Class I Zone 1 IIC T5 Ta -55 to +85 C (T6 +75 C); Class I Div 1 ABCD T5; IECEx / ATEX II 2G Ex db IIC T5 Gb Ta -55 to +75 C (T6 +70 C); II 2D Ex tb IIIC T82 C Db
Functional safety	SIL1 and SIL2 Route 2H to IEC 61508 (2010); version S: SIL2 Route 1H with diagnostics, SFF above 99%
Certificates listed	UL/cUL/ULC E230764; IECEx ULD 19.0008X; ATEX DEMKO 19 ATEX 2141X; UKCA UL21UKEX2132X; CCCEx; EU CPR 2831-CPR-F4858; UK CPR 0832-UKCA-CPR-F1782; MED and MER; INMETRO; DNV; EAC Ex; CSFM

The 24 VDC version is described as EN 54-3 (EU and UK CPR), MED and MER compliant and UL 464 compliant for public-mode fire alarm use. Check the product manual for voltage-specific coding.

Decoding the part number

The part code is built as D1xS1 + horn type + voltage + cable entry + plug material + bracket + version + option + colour. Examples from the datasheet: F is the flare re-entrant horn; DC024 is 11.5-54 VDC and AC230 is 100-240 VAC; entry A is 2 x M20 and 1 x 1/2 in NPT, B 2 x 1/2 in NPT, C 2 x 3/4 in NPT, D 2 x M25; plug material B brass, N nickel-plated brass, S stainless steel; bracket 1 is A4 316 stainless, 3 adds an equipment tag, 5 adds tag and duty label. Product version A is the standard UL, IECEx and ATEX variant with marine approvals, S is the SIL2 Route 1H version, T is telephone/relay initiate (supply 100-260 VAC or 10-30 VDC only), J adds CCCEx and D is the Class II version. Options include 1 (standard), Y, K, V and R for different stage-control configurations, and colour R (red) or G (grey). For the EU and UK CPR, MED and MER compliant 24 VDC variant, select version A and option 1. Accessories listed are the pole-mount bracket kit SP65-0001-A4 and sunshade SP65-0003-A4.

Related D1x models and quotation

E2S lists other D1x devices including the D1xS2F (123 dB), D1xS2H (128 dB), D1xL1F (15 W speaker, 117 dB), D1xL2F (25 W speaker), D1xC1X05F (horn with 5 J strobe), D1xB2X05 (5 J xenon beacon), D1xB2LD2 (LED multi-function beacon) and the D1xCP1-PS pull station. The attached datasheet (1-22-140, July 2026) carries the full tone table. For a GNEx alternative see the E2S GNExS1F and fire and gas detectors. Send voltage, entries, tone, approvals and colour for a quotation.

E2S hazardous-area families

E2S groups its Ex signals by family. GNEx and BEx are both for Zone 1 and Zone 21, and the STEx family covers the same zones. D1x and D2x are the lines for Class/Division sites, and the IS family is intrinsically safe for Zone 0. The listed items show the pattern: GNExS1F is an alarm horn sounder, GNExB2X10 a xenon strobe beacon and BExCS110-05 a combined sounder and beacon.

Ordering E2S signals: what we need

An E2S part number is completed by suffixes for supply voltage, lens color, cable entries and options, so send the whole code from the label. For a new requirement give the area classification, gas group and temperature class, voltage, lens color, entry thread, and the approval your project needs. Many GCC projects name IECEx or ATEX in the specification.