Siemens RDH Wall Mount Thermostat 1 Input, 1 Output Relay 3V dc PID Controller

RS Stock No.:: 245-173
Mfr. Part No.:: RDH100RF/SET / S55770-T378
Manufacturer:: Siemens

Siemens RDH Wall Mount Thermostat 1 Input, 1 Output Relay 3V dc PID Controller

Subtotal (1 unit)*

SGD236.06

(exc. GST)

SGD257.31

(inc. GST)

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Units	Per unit
1 +	SGD236.06

*price indicative

RS Stock No.:: 245-173
Mfr. Part No.:: RDH100RF/SET / S55770-T378
Manufacturer:: Siemens

Specifications

Technical data sheets

Legislation and Compliance

Product Details

Find similar products by selecting one or more attributes.

Select all	Attribute	Value
	Brand	Siemens
	Product Type	Thermostat
	Output Type	Relay
	Number of Inputs	1
	Number of Outputs	1
	Maximum Current	8A
	Maximum Operating Temperature	+30°C
	Minimum Operating Temperature	+5°C
	Control Type	PID Controller
	Maximum Supply Voltage	3V dc
	Display Type	LCD
	Maximum Voltage	250V ac
	Standards/Approvals	UKCA, EAC, CE
	Width	120mm
	IP Rating	IP20
	Length	26.9mm
	Series	RDH
	Mount Type	Wall Mount

	Select all
	Brand Siemens
	Product Type Thermostat
	Output Type Relay
	Number of Inputs 1
	Number of Outputs 1
	Maximum Current 8A
	Maximum Operating Temperature +30°C
	Minimum Operating Temperature +5°C
	Control Type PID Controller
	Maximum Supply Voltage 3V dc
	Display Type LCD
	Maximum Voltage 250V ac
	Standards/Approvals UKCA, EAC, CE
	Width 120mm
	IP Rating IP20
	Length 26.9mm
	Series RDH
	Mount Type Wall Mount

COO (Country of Origin):: CN

Siemens RDH Series Thermostat, 8A Maximum Current, 250V AC Maximum Voltage - RDH100RF/SET / S55770-T378

This thermostat is a wall-mounted radio frequency controller designed to regulate environmental temperature within defined limits. It provides a clear LCD for status readout and connects to external systems via a single relay output, making it suitable for control panels and building automation where Compact radio-linked control is required.

Features and Benefits:

• Relay output rated for 8A protects connected actuators
• Operates from a 3V supply for low-voltage installations
• Supports switching up to 250V AC for mains-controlled loads
• IP20 enclosure suitable for internal, protected locations
• LCD display gives straightforward operational feedback
• Single-input handling simplifies integration with Basic sensors

Applications

• Suitable for room temperature control in commercial buildings
• Ideal for integration with HVAC control panels using RF links
• Used with electrically driven valves and actuators requiring relay switching
• Can be used for monitored zones where Compact wall mounting is needed

What environmental temperature range can it operate within?

It functions reliably between +5°C to +30°C, matching typical indoor climate control requirements.

How is the unit mounted and connected electrically?

The device is intended for wall mounting and provides one output relay and one input for straightforward wiring to control circuits.

What form factor and protection level should installers expect?

Expect a slim profile with a width of 120mm and length of 26.9mm, housed in an IP20‑rated enclosure for indoor use.