DT313 Waterproof Temperature Humidity Sensor
DT313 Waterproof Temperature and Humidity Sensor
Long-Life Outdoor Wireless Environmental Monitoring for Harsh and Humid Environments
DT313 measures ambient temperature (-40 to +120 Celsius, +/-0.3 Celsius) and humidity (0 to 100% RH, +/-2% RH) through an IP68 sealed housing with ePTFE waterproof breathable membrane. It supports LoRaWAN, NB-IoT, Cat-M, and Cat-1 bis wireless options with 15+ years battery life, configurable alarm thresholds with recovery reporting, and BLE configuration. Suitable for roof insulation layers, humid and mold-prone environments, outdoor monitoring, and building structure deployments.
Last updated: June 12, 2026
Customer Value
Built for long-term monitoring in harsh, humid, and enclosed environments
IP68 Waterproof Design
Fully sealed main housing rated IP68 with an ePTFE waterproof breathable membrane that blocks liquid water while enabling accurate humidity measurement through air and vapor exchange.
15+ Year Battery Life
Three ER26500 lithium thionyl chloride batteries deliver 25.5 Ah at 3.6 V for over 15 years of operation under low-reporting-frequency conditions, eliminating frequent battery replacement.
Extreme Environmental Range
Measures temperature from -40 to +120 Celsius and humidity from 0 to 100% RH using an AHT20 sensor IC, covering conditions from freezing outdoor to high-heat industrial environments.
Smart Alarm with Recovery
Configurable high temperature and high humidity alarm thresholds with 2 C and 5%RH hysteresis. Immediate alarm reporting when thresholds are exceeded, plus recovery notification when values return below the recovery point.
Global Wireless Options
Available in LoRaWAN (multi-band), NB-IoT, Cat-M, and Cat-1 bis versions for flexible deployment across Asia, Europe, North America, and other regions.
BLE Configuration and Upgrade
Local Bluetooth configuration for parameter setup and BLE firmware upgrade. OTA firmware upgrade is optionally available depending on wireless version and project configuration.
Hard Facts
Key specifications for product evaluation
Temperature range
Temperature accuracy
Humidity range
Humidity accuracy
Battery life (1 report/day)
Main housing waterproof rating
Compact enclosure dimensions
Wireless connectivity options
Applications
Designed for roof insulation, outdoor, humid, and industrial environments
DT313 is suitable for roof insulation environmental monitoring, humid and mold-prone environments, outdoor temperature and humidity monitoring, building structure environmental monitoring, warehouse and storage environment monitoring, and industrial environmental monitoring.
Technical Specifications
DT313 Waterproof Temperature and Humidity Sensor key specifications
| Item | Specification |
|---|---|
| Product Name | DT313 Waterproof Temperature and Humidity Sensor |
| Measurement | Temperature and humidity |
| Sensor IC | AHT20 |
| Temperature Measurement Range | -40 C to +120 C |
| Temperature Accuracy | +/-0.3 C typical, sensor level |
| Temperature Resolution | 0.01 C |
| Temperature Response Time | 5 to 30 s, tau-63%, sensor level |
| Temperature Drift | Less than 0.1 C/year typical |
| Humidity Measurement Range | 0%RH to 100%RH |
| Humidity Accuracy | +/-2%RH typical, sensor level |
| Humidity Resolution | 0.024%RH |
| Humidity Response Time | Less than 8 s, tau-63%, sensor level |
| Humidity Drift | Less than 1%RH/year typical |
| Device Working Temperature | -30 C to +85 C |
| Wireless Options | LoRaWAN / NB-IoT / Cat-M / Cat-1 bis |
| Configuration | Bluetooth |
| Firmware Upgrade | BLE supported; OTA optional |
| Battery | Built-in ER26500 x 3 |
| Battery Capacity | 25.5 Ah @ 3.6 V |
| Battery Type | Non-rechargeable lithium thionyl chloride battery |
| Battery Life | Up to 15+ years (based on 1 report/day, good signal condition and normal ambient temperature) |
| Default Measurement Interval | 10 minutes |
| Default Reporting Interval | 1 report/day |
| High Temperature Alarm Threshold | 50 C (configurable) |
| High Humidity Alarm Threshold | 90%RH (configurable) |
| Temperature Alarm Hysteresis | 2 C |
| Humidity Alarm Hysteresis | 5%RH |
| Main Housing Waterproof Level | IP68 |
| Breathable Sensing Area | IP67/IP68 ePTFE membrane |
| Dimension | 183 x 183 x 38 mm |
| Weight | Approx. 1000 g |
| Color | Black |
| Material | ABS + PC |
| Installation | Surface mounting / suspended installation in roof insulation layer |
| Certification | CE, LoRaWAN ready; RoHS, IP device-level test TBD |
Comparison
DT311 vs DT313 Environmental Sensors
Use this comparison to choose the right sensor for your project environment.
| Selection Factor | DT313 Waterproof Temperature Humidity Sensor | Alternative |
|---|---|---|
| Monitoring Target | Temperature and humidity in outdoor, humid, and harsh environments | Temperature and humidity in indoor facility and industrial rooms |
| Protection | IP68 sealed housing with ePTFE waterproof breathable membrane | No IP rating; indoor deployment |
| Temperature Range | -40 to +120 C | -30 to +85 C |
| Humidity Range | 0 to 100% RH | 0 to 90% RH |
| Battery | 25.5 Ah non-rechargeable lithium, 15+ year life | 1000 mAh rechargeable lithium, Micro-USB charging |
| Wireless Options | LoRaWAN, NB-IoT, Cat-M, Cat-1 bis | NB-IoT, LoRaWAN, Sigfox |
| Dimensions | 183 x 183 x 38 mm | 80 x 80 x 38 mm |
| Alarm Type | Wireless immediate alarm + recovery reporting with configurable thresholds | LED program status and high temperature alert |
| When to Choose | Choose DT313 for outdoor, roof insulation, humid, and long-life deployments where waterproofing and 15+ year battery life are required. | Choose DT311 for indoor facility rooms, cabinets, storage areas, and greenhouses where rechargeable battery and compact size are priorities. |
Waterproof Design
ePTFE waterproof breathable membrane technology
The DT313 sensing area uses an ePTFE waterproof breathable membrane that blocks liquid water while allowing air and water vapor exchange for accurate temperature and humidity sensing. The main electronics and battery compartment remain fully sealed to IP68.
The hydrophobic membrane has a water entry pressure of more than 20 kPa for 30 seconds and operates from -40 C to +150 C. The breathable sensing area is designed for humid environments and temporary condensation exposure. Long-term water accumulation, continuous condensation, or blockage of the membrane may affect humidity response and measurement accuracy.
Power System
15+ year battery life for set-and-forget deployment
DT313 is powered by three ER26500 non-rechargeable lithium thionyl chloride batteries with a total capacity of 25.5 Ah at 3.6 V. Under a reporting frequency of 1 report per day with good signal conditions and normal ambient temperature, the battery can last more than 15 years.
Battery life is related to reporting interval, measurement interval, wireless version, signal strength, network registration time, ambient temperature, and alarm frequency. Cellular versions may have different battery life depending on network conditions and module configuration.
Alarm Logic
Configurable threshold alarms with hysteresis and recovery reporting
DT313 wakes up periodically according to the configured measurement interval. If an alarm condition is detected during wake-up measurement, the alarm data is reported immediately.
Installation Guide
How to install DT313 for accurate measurement
Selection Guide
How to Choose the Right DT313 Configuration
Select based on deployment environment, network coverage, and project requirements.
Where to Buy
Request a DT313 project quotation
DT313 Waterproof Temperature and Humidity Sensor is sold by quotation. Share deployment environment, network preference, and rollout scale so CNDINGTEK can prepare a project quotation.
Useful inputs for faster quoting
- Application environment and deployment scenario
- Preferred wireless network (LoRaWAN, NB-IoT, Cat-M, or Cat-1 bis)
- Quantity and delivery schedule
- Reporting interval and alarm threshold requirements
FAQ
Frequently Asked Questions about DT313 Waterproof Temperature and Humidity Sensor
What does DT313 measure?
Ambient temperature (-40 to +120 C, +/-0.3 C) and humidity (0-100% RH, +/-2% RH) through an external breathable sensing area.
How is DT313 different from DT311?
DT313 is the waterproof, long-life outdoor version with IP68 housing, ePTFE breathable membrane, -40 to +120 C range, 0-100% RH range, 15+ year battery, and more wireless options including Cat-M and Cat-1 bis. DT311 is for indoor facility monitoring with rechargeable battery and USB charging.
How is DT313 waterproofed?
The main electronics and battery compartment is sealed to IP68. The sensing area uses an ePTFE waterproof breathable membrane that blocks liquid water while enabling accurate humidity measurement.
How long does the DT313 battery last?
Up to 15+ years under low-reporting-frequency conditions (1 report/day, good signal, normal temperature). Uses three ER26500 non-rechargeable lithium batteries with 25.5 Ah at 3.6 V.
Which wireless versions are available?
LoRaWAN (CN470/IN865/EU868/US915/AU915/AS923), NB-IoT, Cat-M, and Cat-1 bis. Final configuration depends on the selected module and target region.
How should DT313 be installed?
Install with the breathable sensing area facing downward or sideways, exposed to ambient air. For roof insulation, suspend the device inside the insulation layer. Do not block, paint, or cover the membrane.
Does DT313 support alarm reporting?
Yes. Configurable temperature and humidity alarm thresholds with hysteresis and immediate alarm reporting. Recovery notification when values return below the recovery threshold.
Is DT313 a standard product?
Yes. DT313 is sold by quotation. Share deployment environment, network preference, and rollout scale so CNDINGTEK can prepare a project quotation.
CNDINGTEK Support
Evaluate DT313 for your monitoring project
Share deployment environment, network preference, and project scale. Our team helps select the right sensor configuration and wireless version.