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Siemens 540-650B Room Temperature Sensor (Series 2000)

Siemens 540-650B Series 2000 room temperature sensor.

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ManufacturerSiemens

Part number540-650B

Sensing Element NTC 10k Thermistor

Temperature Range 55 to 95 °F (13 to 35 °C)

Series 2000 (Interactive)

Dimensions 3-11/32" H x 2-1/2" W x 1-1/2" D

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Interactive digital link to TEC LCD display and keypad Precision thermistor 55-95°F monitoring range Series 2000 design

Product description

The Siemens 540-650B is a Series 2000 room temperature sensor designed for interactive control of building environments. It features a precision thermistor for accurate ambient temperature measurement, with a range of 55 to 95 degrees Fahrenheit (13 to 35 degrees Celsius). The sensor provides a digital link to terminal equipment controllers (TEC), allowing for direct adjustment of setpoints via its liquid crystal display and keypad.

This sensor is ideal for applications requiring precise room temperature management in commercial and institutional buildings. Its interactive features enhance user control and system efficiency in HVAC applications.

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Technical specifications

Sensing Element	NTC 10k Thermistor
Temperature Range	55 to 95 °F (13 to 35 °C)
Series	2000 (Interactive)
Dimensions	3-11/32" H x 2-1/2" W x 1-1/2" D
Cover	White plastic

Common applications

HVAC control

Building automation

Commercial spaces

Office buildings

Retail environments

Compatible systems

Designed for use with Siemens Terminal Equipment Controllers (TEC) and compatible HVAC systems.

Also known as

540-650A TEC Sensor

Replaces / compatible with

This product is discontinued. Please refer to current Siemens room temperature sensors for compatible replacements.

Technical note

Expert tip

This model has been discontinued by the manufacturer. Verify availability or seek a suitable replacement model for your application.

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Frequently asked questions

What are the key features of the Siemens 540-650B Series 2000 room temperature sensor?

The Siemens 540-650B features an interactive digital link to TECs, an LCD display with a keypad for setpoint adjustment, and a precision NTC 10k thermistor for temperature monitoring within a 55-95°F range.