DL-303
Remote CO (carbon monoxide) and CO2 (carbon dioxiode) Alarm / Temperature / Humidity / Dew Point Data Logger with Safety Alarm. Includes iOS App that supports access to real time data on iOS mobile devices. RS-485, Ethernet, and PoE interface. Has operating temperature range of 0°C ~ +50°C (32°F ~ 122°F). (Cellular phone is not included)
Features
The DL-301 Data Logger device is used for recording time-stamped Temperature, Humidity, CO, and Dew Point information. You can record up 450,000 records. The DL-301 data logger can be used on iOS mobile devices with its iOS app. Users can have real-time access of data using free Windows software, iOS and Android APPs. It supports DCON, Modbus RTU, M2M IoT - Internet of Things, and MQTT protocols and communicates over RS-485 and Ethernet, and can be Powered-over-Ethernet (PoE).
- Measurement Range
- CO: 0 ~ 1000 ppm
- CO2: 0 ~ 9999 ppm
- Can store up to 450,000 records with date and time stamps
- Touch screen and Easy Web-based Configuration Interfaces
- Free Software Utility, iOS APP Included for Use on Mobile Phones
- Able to Display Multilingual Messages
- Supports DCON, Modbus RTU, MQTT Protocols
- Supports RS-485/Ethernet/PoE Communication Interfaces
- Relay Output for Alarm Device or IAQ Device Control
- Desktop, DIN-Rail or Wall Mounting
- Large 2.8" LCD Touch Screen, with clear Color Chart to indicate the CO/CO2 Level
- Supports MQTT Protocol for IoT Applications
- Powerful, Free DL300 Utility Software
- Multi-platform Remote Access
iOS APP for Use on iOS Devices
iAir is designed for DL-301 data logger, and is now available on the App Store. iAir can retrieve data from DL-301 at any time and any place, and display real time data and messages on screen remotely to send daily schedules or instructions for IAQ device control to the on-site operator.
- Retrieve real-time data from DL-300 devices
- Self-defined DL-300 device groups for easy viewing
- Set multi-language message to display on screen. The message character is based on UTF-8 encoding.
- Call DL-300 device function can recognize a specific device from the others.
- Search device function can obtain all the DL-300 devices in the LAN.



Specifications
CO Measurement |
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Range |
0 to 1000 ppm (Electrochemical) |
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Resolution |
1 ppm |
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Accuracy |
±5% of measured value |
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Response Time |
30 seconds |
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Warm-up Time |
60 seconds |
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CO2 Measurement |
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Range | 0 to 9999 ppm (NDIR) | |
Resolution | 1 ppm | |
Accuracy | ±30 ppm ±3% of measured value | |
Response Time | 20 seconds | |
Warm-up Time |
60 seconds |
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Temperature Measurement |
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Range |
-10 to +50°C |
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Resolution |
0.1% RH |
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Accuracy |
±5% RH |
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Relative Humidity Measurement |
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Range |
0 to 100% RH |
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Resolution |
Open-Collector (NPN) (100mA, 30V) |
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Accuracy |
+30 V max |
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Dew Point |
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Range |
Calculated using temperature and relative humidity |
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Resolution |
0.1°C |
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System |
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CO Alarm | Yes | |
CO2 Alarm | Yes | |
Real Time Clock | Yes | |
Data Logger | Yes, up to 450,000 records | |
Relay Output | Form A×1, SPST 30 VDC @ 16 A or 250 VAC @ 16 A |
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Interface | RS-485/Ethernet/PoE | |
Main Machine Interface |
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LCD |
2.8 TFT (Resolution 240 x 320 x 16), Defective Pixels <= 3 |
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Backlight Life |
20,000 hours |
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Brightness | 160 cd/m2 | |
Touch Panel |
Yes |
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Electrical |
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Powered from Terminal Block |
+12 to +48 VDC |
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Powered from PoE | IEEE 802.3af, Class 1 (48 V) | |
Power Consumption | PoE | 2.83 W (Max.) |
Non-PoE | 2.24 W (Max.) | |
Mechanical |
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Dimensions (L x W x H) |
114 mm x 106 mm x 56 mm |
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Installation |
Desktop, DIN-Rail or Wall Mounting |
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Environment |
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Operating Temperature | 0°C ~ +50°C (32°F ~ +122°F) | |
Storage Temperature | -30°C ~ +75°C (-22°F ~ +167°F) | |
Humidity |
10 to 90% RH, Non-condensing |