7UT6121-4EB91-1AA0

Full product: OPEN 4100 EMS
Item type: high-end DDC / BACnet building automation controller
Function: controls and monitors HVAC/BMS systems in large buildings

Schneider Electric - Modicon PC-E984-265 CPU
new in the box

Full type: DS-OPEN 710/32 EMS
DS-360104 for standard OPEN 710/32 EMS,
DS-360135 for OPEN 710/32 EMS + M-Bus version.
DDC / building automation controller

Siemens SIMATIC HMI PP17-I DP Push Button Panel 6AV3688-3CD13-0AX0

Schneider MNB-V2-2, MicroNet BACnet controller, TAC I/A Series VAV controller, BACnet MS/TP VAV controller, Schneider HVAC controller, BMS VAV controller, 24VAC VAV controller, MNB-V2-2 zone controller, variable air volume controller.

SIMATIC OP27

OutBack Power AXS Port Modbus/TCP Interface is a communication gateway for OutBack solar/off-grid power systems.

Brand: Siemens SIMATIC
TP177B DP-6 MSTN
6AV6642-0BC01-1AX0 / 6AV6642-0BC01-1AX1
Touch operator panel / HMI
6 inch mono STN / MSTN
PROFIBUS DP / MPI
Power supply: 24 VDC

BECKHOFF-EL2904

Operator Panel / HMI
Siemens SIMATIC COROS / OP7
Text LCD, not touch screen
Function keys + numeric/control keys
Siemens S5 / S7 PLCs

SIMATIC S7-200-CPU216-2

OutBack FN-DC, OutBack FLEXnet DC, OutBack battery monitor, OutBack DC system monitor, FLEXnet DC shunt monitor, OutBack Mate battery SOC monitor, OutBack HUB FNDC, OutBack 500A 50mV shunt monitor, solar battery monitoring device.

Manufacturer: CAREL
Model: MCH2000010
Series: µC2 / MicroChiller 2
Item type: electronic chiller / refrigeration controller
Mounting: DIN rail
Application: chiller / heat pump / refrigeration machine control
Circuit/compressor: 1 circuit, up to 2 compressors
Supply: 24 VAC

Modicon Quantum - hot standby
module
1 connector RJ45 for fiber optic receiver
1 connector RJ45 for fiber optic transmitter

Brand: Siemens
Family: COROS / SIMATIC HMI
Type: Operator Panel, text/keypad HMI
Software: Usually configured with Siemens ProTool / ProTool Lite
Used with: SIMATIC S5 / S7 PLCs depending on interface/version
Status: Very old / obsolete, usually found as used or refurbished spare

Manufacturer: DEOS AG / DEOS control systems GmbH
COO: Germany
Full meaning: OPEN SRU = Single Room Unit
Item type: freely programmable BACnet single-room controller
Use: room HVAC automation, fan-coil control, heating/cooling cascade, room air control, lighting, shutters/blinds
Protocol: BACnet MS/TP
Programming: DEOS FUP XL project/programming tool
I/O: DEOS literature mentions OPEN SRU with integrated I/O, commonly up to 10 integrated I/Os in later portfolio summaries; older COSMOS/OPEN SRU references show variants with more I/O depending model.

Manufacturer: CAREL
Model: MCH2000020
Series: µC2 / MicroChiller 2
Item type: 2nd circuit expansion board / expansion module
Use with: CAREL MCH2000010 / MCH2000000 MicroChiller 2 controller family
Function: allows the MicroChiller 2 controller to manage a second refrigeration circuit
System capacity: with main board + expansion board, it can control up to 2 circuits / 4 hermetic compressors.
Supply: 24 VAC

Advantech PCM-1823, PCM-1823 Rev B1, industrial CPU board, embedded 486 SBC, PC/104 CPU board, Advantech industrial motherboard, 10Base-T Ethernet board, LCD interface industrial computer.

Manufacturer: CAREL
Series: pCO3
Item type: programmable controller / PLC-style HVAC/R controller
Application: refrigeration, HVAC, humidification, chillers, AHU, compressor racks
Supply: 24 VAC / DC, 50/60 Hz; some pCO listings show about 15 W input.

Intelligent sensor module
4 analog inputs
2 digital I/O
Programmable, can work independently for local measurement/control
Used for sensor signal acquisition and processing
Interface family normally uses RS485

SIMATIC S7-200-CPU224

Series: SIMATIC DP ET 200eco
Module type: Basic module BM 142
I/O: 8 digital outputs
Output voltage: 24 VDC
Output current: 2 A per output
Connectors: 8 × M12, single assignment
Protection: IP65 / IP67
Fieldbus: PROFIBUS DP, up to 12 Mbit/s
Short-circuit protection: Yes