N/A D - Digital Serial Output (RS-232 or RS-485) ($127.00)E - Ethernet: 10/100 Base T TCP/IP Output to Tº Sentry ALERT Monitoring System ($281.00)F - ºF, -328 to +122 ºF, ±4 ºF accuracy ($0.00)I-RP - 4-20 mA Output, Receiver Powered ($86.00)I-SP - 4-20 mA Output, Self Powered ('B' Battery Backup not available) ($86.00)PC - Passcode Protected Setpoints ($0.00)V - Voltage Output (-1.0 to +1.0 V, Adjustable Temperature Range) ($73.00)

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• Continuously monitored NIST-traceably calibrated type T thermocouple temperature probe (-200 ºC to +50 ºC)
• Easy-to-read LCD screen, 1-degree resolution, ºC or ºF
• Adjustable high/low alert condition setting and alarm delay period
• Selectable audible alarm mute period
• Optional SPDT relay contact output with adjustable relay delay period
• Available temperature outputs: 4 to 20 mA, voltage, RS-232, RS-485, TCP/IP (Ethernet)

N/A

• R - SPDT Relay Dry Contacts
• B - 9V NiMH Rechargeable Battery Backup
• I - Current Output (4 to 20 mA)
• F - Fahrenheit ºF Display
• SW - Door Switch Input
• PC - Passcode Protected Setpoints
• V - Voltage Output: 10 mV per degree, 0.0 to 1.0 V
• D - Digital Output: RS-232 or RS-485
• E - TCP/IP Ethernet Output
• Extra Loud Audio Alarm: 100 dB at 10 cm

N/A The Tº Sentry Model 140-200 is a standalone, continuously monitoring, single-probe, NIST-traceable temperature verification system with built-in alert status notification for measuring ultra-low temperatures.  The temperature sensing probe is a durable type T thermocouple housed in a 3-inch stainless steel sheath with an operating range of -200 °C to +50 °C.  The Model 140-200 is widely used in ULT freezers (-80 °C), cryogenic chest freezers (below -150 °C), and cryogenic LN2 Dewars (-196 °C) to ensure that cold-chain storage temperatures are maintained for in-vitro fertilization (IVF) materials, viruses, vaccines, and other biological materials.