With splitters, Smart Plug SP1-SIM supports multiple RS485 probes and 1 x DS18B20-Audio Temperature Probe:

DS18B20-Audio Temperature Probe
TH30S-B Temperature and Humidity Probe
Soil Temperature and Moisture Sensor
PT 100 Industrial-grade Temperature Probe
Wind Speed Sensor
CO2 Probe

NOTE:

- Only 1 of each type of probe can be connected at a time.

DS18B20 Temperature Probe	More details
TH30S-B Air Temperature and Humidity Probe	More details
Soil Temperature and Moisture Sensor	More details
PT 100 Industrial-grade Temperature Probe	More details
Wind Speed Sensor	More details
CO2 Probe	More details

UbiBot Audio Plug Splitter for connecting external probes	More details
UbiBot Audio Splitter - 1 male to 6 females for connecting external probes	More details
External Probe Extender - Audio Plug	More details
UbiBot Global SIM Card (We provide a free UbiBot Global SIM Card for each SIM version device)	More details