Unit Controller

Assembly

Green Printed Circuit Board and Components.JPG · Commons ↗ Report photo

Microprocessor control board that stages compressors, runs the gas heat and economizer, and talks to the building automation system.

Direct parts	6
Total parts	152
Used in	1 assembly
Class	Assembly

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Microprocessor control board that stages compressors, runs the gas heat and economizer, and talks to the building automation system. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.

Unit Controller parts and their functions

6 top-level parts · 152 parts in total · full bill of materials below

Unit Controller parts diagram: 1 control PCB, 2 microcontroller, 3 BAS gateway SoC, 4 relay, 5 sensor set, 6 connector. 152 parts in 6 top-level items. — Unit Controller parts diagram. Numbers match the table below; each box is one top-level part or assembly with what it contains.

#	Part	Qty	What it does
1	Control PCB 4 parts	1×
2	Microcontroller	1×	Single-chip microcontroller combining a processor core, flash memory, RAM, and peripherals such as timers, ADCs, and serial ports to run the device's control firmware.
3	BAS Gateway SoC	1×	BAS gateway processor
4	Relay	6×	Stage outputs
5	Sensor Set 2 parts	1×
6	Connector	12×	Mating plug-and-socket pair that joins two lengths of wiring or a cable to a board so a circuit can be assembled, serviced, and separated without soldering.

3D model

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Build & assembly graph

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Bill of materials for Unit Controller

6 top-level lines · 12 rows shown · 152 parts total · indented to 3 levels

#	Item / sub-assembly	Part no.	Qty/assy	Ext. qty	Parts	Type
1	Control PCB 4 parts	rtu-control-pcb	1×	1	126	assembly
1.1	Bare PCB	pcb-bare	1×	1	·	part
1.2	Microcontroller	mcu	1×	1	·	part
1.3	SMD Passive (R/C/L)	smd-passives	120×	120	·	part
1.4	Relay	relay	4×	4	·	part
2	Microcontroller	mcu	1×	1	·	part
3	BAS Gateway SoC	rtu-soc	1×	1	·	part
4	Relay	relay	6×	6	·	part
5	Sensor Set 2 parts	rtu-sensor-set	1×	1	6	assembly
5.1	Temperature Sensor	rtu-temp-sensor	4×	4	·	part
5.2	Refrigerant Pressure Switch	rtu-pressure-switch	2×	2	·	part
6	Connector	connector	12×	12	·	part

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Where the unit controller is used

1 product across 1 domain contain it, directly or inside a sub-assembly

HVAC & Plumbing 1 Packaged Rooftop Unit (RTU)

Used in 1 assembly

Packaged Rooftop Unit (RTU)

Sourcing: possible vendors

Browse the supplier directory → Prices, MOQ, and lead times are algorithmic estimates, not quotes, and not claims about these companies. Company mappings are curated by keyword; est. price band $1–$200. How estimates work

Vendor	HQ	Specialty	MOQ	Lead time
🇨🇳JLCPCB jlcpcb.com ↗	Shenzhen, CN	PCB fabrication	100 pcs	2–4 wks
🇨🇳PCBWay pcbway.com ↗	Shenzhen, CN	PCB fab & assembly	100 pcs	2–4 wks
🇨🇳Shennan Circuits scc.com.cn ↗	Shenzhen, CN	PCB manufacturer	100 pcs	2–4 wks
🇮🇳Shogini Technoarts shogini.com ↗	Mumbai, IN	PCB manufacturer	100 pcs	2–4 wks
🇸🇬Venture Corp venture.com.sg ↗	Singapore	Electronics contract mfg	100 pcs	2–4 wks