YT-1100H 1-4 Channel Gas Alarm Controller
The YT-1100H is a compact, wall-mounted gas alarm controller designed for industrial safety applications. This versatile controller supports 1-4 channels with 4-20mA input capability and features comprehensive sound and light alarm systems with 1-5 relay outputs.
A mini size, wall-mounted gas alarm controller for 1 to 4 channels of 4-20mA detectors. Features integrated monitoring, control, and alarming, built in sound/light alarm, 1–5 relay outputs (up to AC250V 10A), and reverse wiring protection. Supports custom high/low alarm setpoints, range matching, and gas type switching (oxygen/non oxygen). Powers detectors with DC 24V per channel. Ideal for small to medium gas detection systems in chemical plants, tunnels, parking garages, and boiler rooms.
Product Overview
The YT-1100H is a wall-mounted gas alarm controller designed for small to medium gas detection systems. It accepts 1 to 4 channels of 4-20mA analog signals from fixed gas detectors (e.g., YT 95H, SG100 series). The controller integrates real-time monitoring, output control, and alarm functions into a compact unit – about the size of a phone – making it flexible and easy to install.
The controller features a built in sound and light alarm that activates when gas concentration exceeds user set high or low alarm thresholds. It can also drive external devices (solenoid valves, exhaust fans, motors, water pumps, strobes, sprinkler systems, etc.) via its relay outputs – up to 5 relays (optional), each capable of switching AC250V 10A.
Key user benefits:
- Reverse wiring protection on input ports prevents damage during installation.
- Customizable alarm values (high, low, range) to match any detector.
- Gas type switching (oxygen/non oxygen) – important for O₂ deficiency vs. toxic/flammable alarms.
- Clear display – 1 digit for channel number, 4 digits for concentration (0.001–9999), with unit (ppm, %VOL, %LEL).
The controller also provides DC 24V power output (0.25A per channel) to power the connected detectors, simplifying wiring. Data inspection interval is 200ms for fast response.
Product Pictures
Main Features
- 1 4 channel 4 20mA input – Flexible for small gas detection networks.
- Integrated sound/light alarm – Built in, no external alarm needed.
- 1 to 5 relay outputs (optional) – Control fans, valves, pumps, strobes, etc. (AC250V 10A max).
- Reverse wiring protection – Prevents damage on input connections.
- Customizable alarm settings – High alarm, low alarm, range – adjustable per channel.
- Gas type switching – Oxygen (low alarm for deficiency) vs. non oxygen (high alarm for toxicity/flammability).
- Clear display – 1 digit channel ID + 4 digit concentration (0.001–9999) + unit display.
- Fast data scan – 200ms inspection interval.
- Built in power supply – Provides DC 24V (0.25A/channel) to detectors.
- Compact & wall mountable – Mini size (73.7×192.5×83.7mm), easy installation.
Key Technical Specifications
| Parameter |
Value |
| Installation Method |
Wall mounted |
| Dimensions |
73.7 × 192.5 × 83.7 mm |
| Input Channels |
4-20mA; optional 1ch, 2ch, or 4ch |
| Relays |
1, 2, or 5 (optional) – contact rating AC250V 10A |
| Channel Display |
1 digit |
| Concentration Display |
4 digits, range 0.001–9999 (depending on sensor) |
| Unit Display |
ppm, %VOL, %LEL |
| Inspection Interval |
200 ms |
| Power Input |
AC 100–220V, 50/60 Hz |
| Power Output |
DC 24V, 0.25A per channel |
| Operating Temperature |
-10°C to +50°C |
| Operating Humidity |
≤95% RH (non condensing) |
| Weight |
≤1.7 kg |
Typical Applications
- Small gas detection systems – 1 to 4 detectors in a localized area.
- Chemical plants – Monitoring toxic/flammable gas points.
- Wastewater treatment – H₂S, CH₄, O₂ monitoring in lift stations.
- Parking garages – CO and NO₂ ventilation control.
- Tunnels – CO, visibility, and flammable gas monitoring.
- Boiler rooms – CO and combustible gas alarms.
- Cold storage – Ammonia (NH₃) or CO₂ monitoring.
- Laboratories – Fume hood gas detection.
FAQ
1. How many detectors can the YT-1100H support?
Up to 4 detectors with 4 20mA outputs (1 channel, 2 channel, or 4 channel versions available).
2. Does the controller have a built in alarm?
Yes, it has a built in sound and light alarm (buzzer + flashing LED). No external alarm needed for local warning.
3. What are the relay outputs used for?
Relays can control exhaust fans, solenoid valves, water pumps, strobe lights, sprinklers, or other devices up to AC250V 10A.
4. Can I set different alarm thresholds per channel?
Yes – low alarm, high alarm, and measurement range are independently configurable for each channel.
5. How do I power the connected gas detectors?
The controller provides DC 24V output (0.25A per channel) to power the detectors directly.
6. What does “gas type switching (oxygen/non oxygen)” mean?
For oxygen detectors, the alarm logic is reversed (low alarm for deficiency). For toxic/flammable gases (non oxygen), alarms trigger on high concentration. The switch ensures correct alarm behavior.
7. Is there reverse polarity protection?
Yes – wiring port reverse protection prevents damage if you accidentally swap wires.
8. What is the inspection interval?
200ms – the controller reads each channel every 200 milliseconds for fast response.
9. Can I use the controller with 2 wire detectors?
Yes, as long as the detector outputs a 4 20mA signal. The controller’s DC 24V power output can also power 2 wire loop powered detectors.
10. What is the warranty?
Typically 1 year for the controller (confirm with supplier).
Company Introduction
Shenzhen YuanTe Technology Co., Ltd. (brand: Safegas) was established in 2010 and specializes in the R&D, manufacturing, and sales of gas detection equipment and integrated systems. With over 16 years of industry expertise, the company serves sectors including oil & gas, chemicals, environmental protection, electronics, municipal engineering, agriculture, and household appliances. All products are manufactured under ISO9001 and ISO45001 management systems, holding international certifications such as IECEx, ATEX, and EMC. With an annual production capacity of over 80,000 units, YuanTe Technology supplies gas detection solutions to customers worldwide.
Company Advantages
- Established since 2010 – Over 16 years of experience in gas detection R&D and manufacturing.
- Full product range – Portable detectors, fixed transmitters, analyzers, control panels, docking stations, accessories.
- International certifications – IECEx, ATEX, EMC certified for hazardous areas.
- Wide gas & industry coverage – Hundreds of gases; serve oil & gas, chemical, mining, environmental, food, pharma, and more.
- Strong R&D & quality – ISO9001 & ISO45001 certified; professional R&D team and global service network.
- High production capacity – Over 80,000 units per year with fast delivery (5–7 working days typical).
- Global customer support – 24/7 after sales service and solutions tailored to diverse industries.
Standard Package (for YT-1100H, 4 channel version example)
| Item |
Quantity |
| YT-1100H gas alarm controller (4 channel, with built in sound/light alarm) |
1 unit |
| Wall mounting screws and plugs |
1 set |
| User manual (English) |
1 copy |
| Certificate of conformity |
1 copy |
| Warranty card |
1 piece |
Relay configuration (1, 2, or 5 relays) depends on ordered option – please specify when ordering.
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