Extech RHT20 Temperature Humidity USB Stick Datalogger will datalog up to 32,000 readings (16,000 for each parameter: Humidity and Temperature). Extech RHT20 Temperature Humidity USB Stick Datalogger also thresholds for RH and Temperature with an alarm that is user-programmable.
Proposition 65 Warning for California Residents: This product can expose you to chemicals including Benzene, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to 
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