Interface	Dallas Semiconductor/Maxim 1-Wire®
Temperature Sensor	Dallas Semiconductor/Maxim DS18S20 Range -67° F to +257° F Accuracy ±0.5° C from -10° C to +85° C
Humidity Sensor	Honeywell HIH-4000-001 Accuracy: ±2.5% RH, 0-100% RH non-condensing Response Time: 15 sec in slowly moving air at 25° C Stability: ±1% RH typical at 50% RH per year
Power	1-Wire® bus and external 5VDC (supplied by T-238, T-238+ or X1W-1)
Aspirator	12VDC fan with ball-bearings
EMP Sensor Interface (optional)	Interfaces directly with the X1W-4 EMP Sensor kit. Compatible with other commerical sensors Closes circuit for the duration of the cloud-to-ground strike. Interface uses RCA-female jack for connection to sensor.
Rain Gauge Interface (optional)	Designed to work with Rainwise or Davis reed switch gauges. However, can be jumped for any tipping bucket rain gauge that momentarily closes a circuit when tipped. Uses RJ11 jack for interface.