Summary

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28	28	SDI-12 (Serial Digital Interface at 1200 baud) is an asynchronous [[serial communications>>url:https://en.wikipedia.org/wiki/Serial_communication]] protocol for intelligent sensors that monitor environment data. SDI-12 protocol is widely used in Agriculture sensor and Weather Station sensors.
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30		-**(% style="color:blue" %)SDI-12-LB** has SDI-12 interface and support 12v output to power external SDI-12 sensor. It can get the environment data from SDI-12 sensor and sends out the data via LoRaWAN wireless protocol.
	30	+SDI-12-LB has SDI-12 interface and support 12v output to power external SDI-12 sensor. It can get the environment data from SDI-12 sensor and sends out the data via LoRaWAN wireless protocol.
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32		-The LoRa wireless technology used in **(% style="color:blue" %)SDI-12-LB** allows device to send data and reach extremely long ranges at low data-rates. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption.
	32	+The LoRa wireless technology used in SDI-12-LB allows device to send data and reach extremely long ranges at low data-rates. It provides ultra-long range spread spectrum communication and high interference immunity whilst minimizing current consumption.
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34		-**(% style="color:blue" %)SDI-12-LB** is powered by **(% style="color:blue" %)8500mAh Li-SOCI2 battery**, it is designed for long term use up to 5 years.
	34	+SDI-12-LB is powered by **(% style="color:blue" %)8500mAh Li-SOCI2 battery**(%%), it is designed for long term use up to 5 years.
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36		-Each **(% style="color:blue" %)SDI-12-LB** is pre-load with a set of unique keys for LoRaWAN registrations, register these keys to local LoRaWAN server and it will auto connect after power on.
	36	+Each SDI-12-LB is pre-load with a set of unique keys for LoRaWAN registrations, register these keys to local LoRaWAN server and it will auto connect after power on.
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39	39	[[image:image-20230201084414-1.png||height="464" width="1108"]]
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44		-
45		-
46	46	== ​1.2 Features ==
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48	48
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58	58	* Downlink to change configure
59	59	* 8500mAh Battery for long term use
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	59	+
61	61	== 1.3 Specification ==
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63	63
64		-**Micro Controller:**
	63	+**(% style="color:#037691" %)Micro Controller:**
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66	66	* MCU: 48Mhz ARM
67	67	* Flash: 256KB
68	68	* RAM: 64KB
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70		-**Common DC Characteristics:**
	69	+**(% style="color:#037691" %)Common DC Characteristics:**
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72	72	* Supply Voltage: 2.5v ~~ 3.6v
73	73	* Operating Temperature: -40 ~~ 85°C
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75		-**LoRa Spec:**
	74	+**(% style="color:#037691" %)LoRa Spec:**
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77	77	* Frequency Range,  Band 1 (HF): 862 ~~ 1020 Mhz
78	78	* Max +22 dBm constant RF output vs.
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79	79	* RX sensitivity: down to -139 dBm.
80	80	* Excellent blocking immunity
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82		-**Current Input Measuring :**
	81	+**(% style="color:#037691" %)Current Input Measuring :**
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84	84	* Range: 0 ~~ 20mA
85	85	* Accuracy: 0.02mA
86	86	* Resolution: 0.001mA
87	87
88		-**Voltage Input Measuring:**
	87	+**(% style="color:#037691" %)Voltage Input Measuring:**
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90	90	* Range: 0 ~~ 30v
91	91	* Accuracy: 0.02v
92	92	* Resolution: 0.001v
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94		-**Battery:**
	93	+**(% style="color:#037691" %)Battery:**
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96	96	* Li/SOCI2 un-chargeable battery
97	97	* Capacity: 8500mAh
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99	99	* Max continuously current: 130mA
100	100	* Max boost current: 2A, 1 second
101	101
102		-**Power Consumption**
	101	+**(% style="color:#037691" %)Power Consumption**
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104	104	* Sleep Mode: 5uA @ 3.3v
105	105	* LoRa Transmit Mode: 125mA @ 20dBm, 82mA @ 14dBm
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	106	+
107	107	== 1.4 Connect to SDI-12 Sensor ==
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