Series WTDL Wireless Temperature/Humidity Data Logger

Transmission up to 400 Feet, Text/Email Alarm Updates

The Series WTDL Temperature/Humidity Data Logger is perfect for applications which require real time monitoring or areas that are not as accessible to periodically retrieve the data. The data loggers can transmit up to 500 feet indoors and up to 2000 feet outdoors. The distance can be increased by using additional receivers. Wireless data is transmitted on a 2.4 GHz frequency allowing it to be used anywhere in the world. A network of data loggers can be separated into a smaller subnet. These subnets can all be controlled by a single PC. The Series WTDL data loggers also feature a user programmable alarm. This alarm can be configured to show an on screen alarm, send a text message (standard SMS rates apply) or an email if an alarm condition is met.

Product Applications

  • Cold room temperature/RH monitoring
  • Clean room temperature/RH monitoring

Models & Ordering

Shipping Information

All shipping times are dependent on product availability at time of shipment.

Although we make every effort to ensure a continuous supply of our products, occasional circumstances may force us to temporarily run out of a product, or have shipping delays. Should this occur, customers will be notified soon after placement of any orders for such products and, if applicable, items will be put on backorder. For orders requiring expedited shipment, our customer service team can be contacted to confirm product availability

COVID-19 Update: Due to high customer demand, lead time on some products may be up to two weeks. While this is a developing health situation, we are working continuously to take the necessary measures to ensure that the products you need are available with minimal interruption.

Model Description Usually Ships* Price Order
Ships: 3-4 Weeks
Price: $296.00
Temperature data logger 3-4 Weeks* $296.00 Order
Ships: Consult Factory
Price: $350.00
Temperature data logger with humidity output Consult Factory* $350.00 Order
Ships: 3-4 Weeks
Price: $376.00
Temperature data logger with probe attachment 3-4 Weeks* $376.00 Order


Temperature Range:
WTDL-10/WTDL-20: -4 to 176°F (-20 to 80°C); WTDL-30: -328 to 500°F (-200°C TO 260°C) for probe.
Humidity Range:
WTDL-20: 0 to 95% RH.
Temperature Accuracy:
WTDL-10/WTDL-20: 0.9°F (0.5°C) from 32 to 122°F (0 to 50°C); WTDL-30: 0.18°F (0.1°C) from -4 to 176°F (-20 to 80°C), 0.9°F (0.5°C) outside of specified range.
Humidity Accuracy:
WTDL-20: ±3.0% RH, ±2% typical at 77°F (25°C).
Temperature Resolution:
0.018°F (0.01°C).
Humidity Resolution:
WTDL-20 only: 0.1% RH.
RF Carrier Frequency:
2.45 GHz.
ISM band 2.405-2.48 GHz.
Maximum Power Output:
+0 dBm typical.
Wireless Transmission Range:
2000' (610 m) outdoors, line of sight; 500' (152 m) indoors.
Receiver Sensitivity:
-95 dBm typical.
Memory Size:
WTDL-10/WTDL-30: 30,000 Readings; WTDL-20: 15,000 readings per channel, software configurable memory wrap.
Sampling Method:
Stop on memory full or continuous recording.
Sampling Rate:
2 sec to 24 hrs.
Temperature Limits:
-4 to 176°F (-20 to 80°C).
Humidity Limits:
0 to 95% RH.
Computer Requirements:
Windows® XP (SP3), Windows Vista®, Windows® 7.
Computer Interface:
Power Requirements:
3.6 V TL-5104 lithium metal battery, installed functional, user replaceable.
Battery Life:
2 years (approx.).
Housing Material:
ABS plastic.
0.25 lb (113.4 g).
FCC Approval:
Agency Approvals:


Model Number Description Usually Ships* Price Order
Wireless transceiver, USB cable, software CD, software
manual, A/C adapter WTDL-RX Wireless transceiver, USB cable, software CD, software manual, A/C adapter 3-4 Weeks $254.00 Order
TLH-5903 Replacement Battery for WTDL Series. 3-4 Weeks $23.50 Order



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