EYC-Tech Overview Air Quality Transmitters EYC-Tech GS43/44 CO2 Transmitter(Indoor / Duct Type) [...] Expand Features : Suitable for HVAC. Various installation types. Sensor type : NDIR sensor Measuring range : 2000 / 5000 / 10000 PPM Output : 4 ... 20 mA + RS-485 Accuracy : ±40 or ±250 PPM ±3% of reading IP rating : IP54(GS43) / IP64(GS44) Data Sheets EYC-Tech THG03 CO2 Temp. & Humidity Transmitter(Indoor) [...] Expand Features : Suitable for HVAC application. Simple appearance. Multi-measurement. Sensor type : CO2 NDIR sensor / Temp. & humidity MEMS sensor Measuring range : 0 ... 2000 PPM / 0 ... 50°C / 0 ... 100%RH(Non-condensing) Output : RS-485 Accuracy : ±40 PPM±3% of reading / ±0.3°C / ±2.5%RH IP rating : IP20 Data Sheets EYC-Tech GS23 CO₂ Transmitter / Indoor type [...] Expand Features : Suitable for HVAC application. Simple appearance. Sensor type : NDIR sensor Measuring range : 0 ... 2000 PPM Output : 0 ... 10 V / 4 ... 20 mA / RS-485 Accuracy : ±40 PPM±3% of reading IP rating : IP20 Data Sheets EYC-Tech TGP03 Multifunction CO₂/PM2.5 Indoor Air Quality Monitor [...] Expand Features: Suitable for HVAC application. Simple appearance. Multi-measurement. Sensor type: Temperature & Humidity MEMS / CO₂ NDIR / PM2.5 Infrared LED Measuring range: 0, ..., 50°C / 0, ..., 100%RH (Non-condensing) / 0, ..., 2,000 PPM / PM2.5 0, ..., 500 μg/m³ Output: RS-485 Accuracy: ±0.3°C / ±2.5% RH / ±40 PPM ±3% of reading / ± 10 μg/m³ ± 5% of reading IP rating: IP20 Data Sheets EYC-Tech GS07 CO2 Transmitter [...] Expand Features : Suitable for light industry. Compact size. Easy to install. Sensor type : Non-dispersive infrared(NDIR)waveguide technology Measuring range : 0 ... 20,000 (PPM) Output : RS-485 / 0 ... 10 V / 4 ... 20 mA Accuracy : ±40 PPM±3% of reading (2000/5000 PPM)±200 PPM±3% of reading (10000/20000 PPM) IP rating : IP54(Clamp) / IP65(Flange) Data Sheets EYC-Tech GM33 CO Transmitter(Wall Type) [...] Expand Features : Suitable for environment monitoring in light industry. Sensor type : Electrochemistry CO Sensor Measuring range : 0 ... 500 PPM Output : 4 ... 20 mA + RS-485 Accuracy : ±3% F.S. IP rating : IP65(Body) / IP20(Sensor) Data Sheets