Extech SD500 Humidity/Temperature Datalogger with SD Card

The Extech SD500 is a dual-display datalogger that simultaneously measures and records relative humidity (10 to 90% RH) and temperature (32 to 122°F / 0 to 50°C). Designed for environmental monitoring in calibration rooms, offices, cleanrooms, and storage facilities, it logs timestamped data directly to a 2 GB SD card in Excel®-compatible CSV format for easy transfer and analysis on a PC. With a user-selectable sampling interval from 5 seconds to 10 minutes (plus Auto mode), a large dual LCD, and long-life battery operation, the SD500 supports both portable and AC-powered use. It includes 6 AAA batteries, a universal AC adapter, 2 GB SD card, and mounting bracket.

Features:

• Dual LCD displays real-time humidity and temperature readings
• Logs data to 2 GB SD card in Excel®-compatible format
• User-selectable sampling rate: 5, 10, 30, 60, 120, 300, 600 seconds or Auto
• Large memory capacity: up to 20 million data points
• Powered by 6 AAA batteries or universal AC adapter
• Includes mounting bracket for wall or desktop installation
• Ideal for calibration labs, cleanrooms, offices, and storage monitoring

Specifications:

Temperature	32 to 122°F (0 to 50°C)	0.1°F/°C	±1.5°F (±0.8°C)
Relative Humidity	10 to 90% RH	0.1% RH	±4% RH
Datalogging Interval	5/10/30/60/120/300/600 sec or Auto	—	—
Memory Capacity	Up to 20,000,000 data points (2 GB SD card)	—	—
Display	Dual LCD	—	—
Power Source	6 × AAA batteries or universal AC adapter	—	—
Dimensions	5.2 x 3.1 x 1.3" (132 x 80 x 32 mm)	—	—
Weight	9.9 oz (282 g)	—	—

Downloads:

Extech SD500 Datasheet