. 2017 Aug 3;17(8):1781. doi: 10.3390/s17081781

Table 9.

Types of sensors, microcontrollers, and wireless protocols/technologies used in precision agriculture (PA).

Sensors			Microcontrollers	Wireless Protocols/Technologies
Soil Related	Leaf/Plant Related	Environment Related	Microcontrollers	Wireless Protocols/Technologies
Hydra probe II soil sensor (www.stevenswater.com) MP406 (www.ictinternational.com.au) Pogo portable soil sensor (www.stevenswater.com) ECH₂O EC-5 (http://www.decagon.com) ECRN-50 low-REC (http://www.decagon.com) WET-2 (http://www.dynamax.com) EC-250 (http://www.stevenswater.com) BetaTherm 100K6A1B (http://www.campbellsci.com) Waspmote (http://www.libelium.com/products/waspmote/) VH-400 (http://www.vegetronix.com) THERM200 (http://www.vegetronix.com) Tipping bucket rain gage (http://www.stevenswater.com) AquaTrak 5000 (http://www.stevenswater.com) ECRN-100 high-REC rain Gauge (http://www.decagon.com) 107-L temperature Sensor (BetaTherm 100K6A1B Thermistor) (http://www.campbellsci.com)	237-L, leaf wetness sensor (http://www.campbellsci.com) Leaf wetness sensor (http://www.decagon.com) LW100, leaf wetness sensor (http://www.globalw.com) TT4 multi-sensor thermocouple (www.ictinternational.com.au/thermocouple.htm) SenseH2™ hydrogen sensor (http://www.ntmsensors.com) LT-2 M (leaf temperature) (http://www.solfranc.com) TPS-2 portable photosynthesis (www.ppsystems.com/Literature/EDSTPS2_System.pdf) PTM-48A photosynthesis monitor (http://phyto-sensor.com/PTM-48A) Cl-340 hand-held photosynthesis (http://www.solfranc.com) 107-L (BetaTherm 100K6A1B thermistor) (https://www.campbellsci.com) YSI 6025 chlorophyll sensor (http://www.ysi.comysi_6025.pdf) Field scout CM1000TM (http://www.specmeters.com/pdf/2950FS.pdf)	Met station one (www.stevenswater.com) CM-100 compact weather station (http://www.stevenswater.com) CS300-L Pyranometer (http://www.campbellsci.com) HMP45C (http://www.campbellsci.com) SHT71 (http://www.sensirion.com/humidity) LI-200 Pyranometer (http://www.stevenswater.com) XFAM-115KPASR (http://www.pewatron.com) Cl-340 (http://www.solfranc.com) SHT75 (http://www.sensirion.com/humidity) Met One Series 380 rain gauge (http://www.stevenswater.com) Waspmote (http://www.libelium.com/products/waspmote/) WXT520 compact weather station (http://www.stevenswater.com) All-In-One (AIO) Weather Sensor (http://www.climatronics.com) RM Young (model 5103) (http://www.stevenswater.com) RG13/RG13H (http://www.vaisala.com) SHT11 (https://www.parallax.com)	ATmega128L Marvell PXA271 TIMSP430 Arduino UNO TIMSP430 Cortex M3 LPC 17xx ARM 920T MSP430F2274 MSP430 MSP430G2553 MSP430F149 PIC24FJ64GB004 AT89C52 PIC18F452 PIC18F455 ATmega2560 AT86RF230 ATMega64L 8051 JN5148 ATmega1284P ARM9 ATmega328 MSP430F1611 PIC16F877A MSP430FR5739 AT89S52 STM 32/F4 ATmega1281 ATMEGA 16 PIC 18F452	ZigBee/IEEE 802.15.4 Bluetooth (IEEE 802.15.1) Bluetooth low energy (BLE) (IEEE 802.15.1) WiFi (IEEE 802.11) GPRS/3G/4G LoRa (IEEE 802.15.4g) SigFox (IEEE 802.15.4g)