R-COM 20 Series   V4 Sensor  PLUS Guide
Part RCM-A310-11 plus guide (see picture)
 
Humidity / temperature sensor 
 
This Sensor is for the R-Com MX 20 PX-20 and UX-20  Egg incubator. 

Please check your model to make sure this is the correct part for your incubator.
Part #RCM-A310-11