The Acurite Access™ can accept up to 7 sensors.  The following sensors are compatible:

1. 06059M AcuRite Atlas™ Weather Sensor 
2. 06014M PRO+ AcuRite Iris™ (5-in-1) Weather Sensor
3. 06004M AcuRite Iris™ (5-in-1) Weather Sensor
4. 06008RM AcuRite Notos™ (3-in-1) Weather Sensor
5. 06002M Wireless Temperature and Humidity Sensor
6. 06044M Room Temperature and Humidity Sensor
7. 00276RM Room Monitor
8. 00275RM Outdoor Temperature and Humidity Monitor
9. 06010RM Add-on Water Detector (requires a monitor)
10. 06011RM Add-on Liquid and Soil Temperature Sensor (requires a monitor)
11. 06012RM Add-on Spot Check Temperature and Humidity Sensor (requires a monitor)
12. 06034RM Wireless Rain Gauge Collector
13. 06045M Lightning Detector 

Click Here to Review the Sensor Comparison Chart