> For the complete documentation index, see [llms.txt](https://help.boomerang3.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://help.boomerang3.com/external-sensors-in-incubators/k-systems/g210-invicell-plus/accessories.md).
# Accessories
The G210 Invicell Plus unit is delivered with the accessories that are used to enable the connection to the built-in temperature monitoring sensors and to install the CO2 external sensor.
* 25 Pin D-Sub male connector prepared for soldering used to connect to the built-in temperature sensors (P/N 60018). In case it is not available any 25 pin D-sub male connector can be used e.g. .
* 24 VDC 500mA power supply with 5.5/2.5 barrel connector (not shown), used to supply the built-in temperature monitoring circuit (P/N 60019).
* The CO2 sensor reduction (P/N 60014). **Remark**: this reduction was probably used with GMP 221 and does not fit to GMP251 despite the fact it is described as the one to use with this sensor. The part that fits is Metallic Metal Cable Gland, M32 Thread, 18mm Min, 25mm Max
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