An 8-channel RTD based temperature recorder. Monitor and record up to 8 RTD's to accurately measure temperature in several locations simultaneously. RTD probes sold separately. Sensor: External: 2,3, or 4 wire 100 ohms platinum RTD Temperature Range: -200 to +850°C Temperature Resolution: 0.01°C Calibrated Accuracy: ±0.1°C Memory: 10,922/channel Sampling Rate: 2 seconds up to 12 hours Channels: 8 LED Indicator: None Required Interface Package: IFC110 or IFC200 Baud Rate: 2,400 Typical Battery Life: 1 year Operating Environment: -20~+60°C, 0~95%RH non-condensing Material: Anodized aluminum Dimensions: 3.5" x 4.4" x 1.5", (89mm x 112mm x 39mm) CE Approval: Yes Weight: 15.9oz.