Pen continuously and simultaneously displays both RH and °F/°C with dual-recall memories. Memory displays highest and lowest humidity/temperature readings achieved overnight or during any time period. ³/₄ in. LCD can be read at a glance. Display is updated every second. Case is high-impact, chemical-resistant ABS plastic. Supplied with a battery for continuous, always-on monitoring for half a year (replacement battery, Cat. No. 350-16678)

Multi-point calibration on an individually-numbered Traceable Certificate which assures accuracy from an ISO/IEC 17025:2005 (1750.01) calibration laboratory accredited by A2LA. It indicates traceability of measurements to the SI units through NIST or other recognized national measurement institutes (NMI) that are signatories to the CIPM Mutual Recognition Agreement.

Specifications:
• RH range: 20 to 95%
• RH resolution: 1%
• RH accuracy: +/-3.5% mid-range to +/-5.5%
• Temperature range: 32 to 122°F (0 to 50°C)
• Temperature resolution of 0.1°
• Temperature accuracy of +/-1°C
• Dimensions: 5¹/₂ x ⁷/₈ x ²/₃ in.
• Weight: 1¹/₄ ounces
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