Operating range: -20° to 50°C (-4° to 122°F) with alkaline batteries, -40° to 70°C (-40° to 158°F) with lithium batteries
Sensor inputs: Up to four smart sensors (including multiple-parameter sensors)
Communication: 3.5 mm serial port
Dimensions: 8.9 cm H x 11.4 cm D x 5.4 cm W (3.5 x 4.5 x 2.125 inches)
Weight: 0.36 kg (0.8 lb)