Compared

LoRaWAN Gas Sensors Compared: MacSync LH2S X1 and L Odor X2 vs Milesight GS301 vs Zonewu vs Daviteq WSLRW-G4 vs Atomsenses AS-108

Five LoRaWAN electrochemical gas monitors for hydrogen sulphide and ammonia, for anyone weighing an alternative to the GS301, a Zonewu or Atomsenses node or a Daviteq build-to-order sensor. The differences are the range each cell covers, whether accuracy is stated at all, cell life, battery against DC, indoor against outdoor enclosures, a local buzzer against platform alerts, IN865 as standard and where the hardware and the support come from. None of the five is a certified safety detector.

Macnman product on this page: MacSync LH2S X1 / L Odor X2

Side by side

The published figures

Every value is as each manufacturer publishes it, checked on 25 October 2026. Where a page does not state a figure, the cell says so.

Compare	Macnman MacSync LH2S X1 / L Odor X2	Milesight GS301	Zonewu LoRaWAN H₂S	Daviteq WSLRW-G4	Atomsenses AS-108
Gases and range	H₂S 0–100 ppm; NH₃ 0–100 ppm on the L Odor X2; oxygen 0–30 % and ethylene 0–100 ppm on sister nodes	NH₃ 0–10 ppm, H₂S 0–5 ppm, temperature, humidity	H₂S 0–10 ppm, temperature, humidity	CO, NO, NO₂, H₂S, NH₃, O₂, O₃, SO₂, Cl₂, HCHO options; ranges not on the page	H₂S 0–100 ppm, temperature, humidity
Resolution	0.1 ppm H₂S · 0.5 ppm NH₃	0.001 ppm H₂S · 0.01 ppm NH₃	0.01 ppm	Not on the page	0.01 ppm
Stated accuracy	Not stated; repeatability under 2 % (H₂S), under 10 % (NH₃)	±5 % FS	Not stated	Not on the page	Under ±3 %
Cell life and calibration	2 years; factory calibrated; field interval not stated	Over 3 years; drift under 1 % per month	Under 2 years; recalibrate every 6–12 months (maker's FAQ)	Not on the page	Not on the page
Power	19 Ah: about 2 / 4 / 7+ years at 5 / 15 / 60-minute reports; or 9–36 V DC	Four 4,000 mAh cells, about 3 years at 10-minute reports	5–28 V DC only, no battery	Two AA cells, 5–10 years claimed	Three ER14505 or four ER18505 cells
Enclosure and temperature	IP65, IP67 option; −40 to +80 °C; glass-filled nylon	IP30; −40 to 55 °C, recommended below 35 °C	120 g; cell −20 to 50 °C; IP not stated	Not on the page	IP30
Local alarm	None; alerts to the platform or a MacSet controller	Buzzer and traffic-light LED	Not stated	Not stated	Not stated
Radio and IN865	LoRaWAN 1.0.4, Class A, Class C from the app; IN865 standard; MacTalk device to device	Class A, OTAA and ABP; IN865 among eight plans; NFC	LoRaWAN 1.0.3, Class C default; IN865 among eight plans	LoRaWAN; IN865 listed on the optical oxygen model	Class C, OTAA and ABP; IN865 among eight plans
Positioning	Outdoor and industrial: STPs, sewers, sheds, yards, stores	Indoor washrooms and rooms	Indoor and industrial, DC powered	Built to order	Indoor; 'between personal detectors and fixed systems'
Designed and made in	Pune, India; WPC compliant, RoHS	China	China	Vietnam	China

Figures for the other products are taken from their manufacturers' published pages, checked on 25 October 2026, and may change; check the linked sources before you order. Milesight, Zonewu, Daviteq and Atomsenses are trademarks of their respective owners.

Where each fits

What the table means for your site

Where the MacSync gas sensors fit

Outdoor and industrial points: STP works, sewer chambers, landfill fence lines, livestock sheds, cylinder stores and ripening rooms, with 0–100 ppm cells, an IP65 enclosure with an IP67 option rated −40 to +80 °C, a 19 Ah battery or 9–36 V DC, Class C and MacTalk from a phone, IN865 as standard with WPC compliance, made and supported in Pune. The datasheets state no accuracy figure, no cross-sensitivity and no recalibration interval, and this comparison says so.

Where the Milesight GS301 fits

Indoor washrooms and rooms: low ranges (NH₃ to 10 ppm, H₂S to 5 ppm) at fine resolution with ±5 % FS stated, a buzzer and traffic-light LED, a long-life cell, IP30 and a recommendation to run below 35 °C.

Where the Zonewu node fits

DC-powered indoor or industrial points with a 0–10 ppm H₂S cell, Class C by default and a candid FAQ on recalibration every 6–12 months; no battery variant and no ingress rating on the page.

Where the Daviteq WSLRW-G4 fits

A build-to-order multi-gas node with ten cell options and a long claimed life on two AA cells; ranges and certificates are not on the public page.

Where the Atomsenses AS-108 fits

An indoor IP30 H₂S node with a 0–100 ppm cell at 0.01 ppm resolution and a stated accuracy, positioned between personal detectors and fixed systems, on IN865 among eight plans.

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Designed and built in Pune, India
WPC compliant, RoHS conformant

Questions

Choosing between them

None. All five are monitoring nodes that report over LoRaWAN on an interval; a certified fixed detector or a personal monitor remains where law, an entry permit or a safety case requires one.

The MacSync gas sensors, designed and manufactured in Pune, with WPC compliance and RoHS on their datasheets and IN865 as the shipped plan. Milesight, Zonewu and Atomsenses list IN865 among their plans; Daviteq lists it on its optical oxygen model.

The MacSync sensors (IP65, IP67 option, 19 Ah battery) and, on their pages, no other: the GS301 and AS-108 are IP30 indoor nodes, the Zonewu node is DC powered and Daviteq's enclosure rating is not published for the G4.