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Submittal Sheet

Smart Thermostat

RDS120, RDS120.B

Advanced cloud connected thermostat for light commercial and residential

applications

● Controls conventional HVAC systems up to 3H/2C and heat pumps up to 4H/2C

● Easy-to-read, backlit, auto-dimming 3.5-inch, color, LCD touchscreen

● Intuitive remote user control using Apple iOS and Android mobile phone

applications

● One-touch green leaf button to maximize energy efficiency

● Built-in Volatile Organic Compounds (VOC) sensor enables ventilation strategies

for optimum indoor air quality

● Built-in humidity sensor

● Built-in occupancy sensor enables occupancy control

● Easy-to-program user schedule

A6V11419719_enUS_b

Smart Infrastructure

11/23/2021

Summary of content (8 pages)

PAGE 1
Submittal Sheet Smart Thermostat RDS120, RDS120.B Advanced cloud connected thermostat for light commercial and residential applications ● ● ● ● ● ● ● ● A6V11419719_enUS_b 11/23/2021 Controls conventional HVAC systems up to 3H/2C and heat pumps up to 4H/2C Easy-to-read, backlit, auto-dimming 3.
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Thermostat Highlights ● Easy to understand tri-level air quality indication: Good, Okay, Poor ● Inputs for remote or averaging temperature and humidity sensors ● Password protected screen lock ● PID algorithm for precise control ● Advanced energy saving control with free cooling capability ● Two multifunctional inputs, optional and configurable for: – Room temperature – Operating mode switch – Universal contact – Outside air temperature – Room air humidity – Presence detector ● – Room air quality Six relay
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Ordering Information Model Number Orderable Part Number Description RDS120 S55772-T101 Smart Thermostat US Residential RDS120.B S55772-T106 Smart Thermostat BACnet Associated Equipment Part Number Description QAA2330.EWNN Remote Wall Mounted Sensor – Temperature Only QFA33SS.EWNN Remote Wall Mounted Temperature and Humidity Sensor QAM2030.
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Technical data Power Supply Power Supply Operating voltage AC 24 V (±20%) Frequency 48 to 63 Hz Power consumption Max. 9 VA Maximum power supply current 4 A current limited Radio Data Radio Parameter Frequency band 2.4 to 2.4835 GHz Maximum radio-frequency power 18 dBm WLAN standard IEEE 802.11b/g/n (HT20) WLAN channel 1-11 Inputs Connections to Multifunctional Inputs X1 - M - X2 Passive temperature sensors - Cable length max.
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Inputs, Continued Connections to Multifunctional Inputs X1 - M - X2 Active DC 0 V to 10 V sensors - Room temperature range (default) - Outdoor temperature range (default) - Humidity range (default) - CO2 range (default) NOTE: min./max. configurable via parameters 32 °F to 122 °F (0 to 50 °C) -32 °F to 176 °F (-50 to 80 °C) 0 to 100% 0 to 2000 ppm Digital contacts - Operating action - Contact sensing - Parallel connection - Input function Selectable N.O./N.C. DC 14 to 40 V, 8 mA (typical) Max.
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Connections Interfaces Micro USB A service port is provided for firmware upgrade Wiring Connections Screw terminals Solid wires or prepared stranded wires: Max.
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Issued by Siemens Industry, Inc. Smart Infrastructure 1000 Deerfield Pkwy Buffalo Grove IL 60089 +1 847-215-1000 Document ID A6V11419719_enUS_b Edition 11/23/2021 © Siemens Industry, Inc., 2021 Technical specifications and availability subject to change without notice.