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41	41	* Downlink to change configure
42	42	* 8500mAh Battery for long term use
43	43
44		-
45	45	== 1.3 Specification ==
46	46
47	47
...	...	@@ -79,7 +79,6 @@
79	79	* Sleep Mode: 5uA @ 3.3v
80	80	* LoRa Transmit Mode: 125mA @ 20dBm, 82mA @ 14dBm
81	81
82		-
83	83	== 1.4 Sleep mode and working mode ==
84	84
85	85
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107	107	)))
108	108	|(% style="width:167px" %)Fast press ACT 5 times.|(% style="width:117px" %)Deactivate Device|(% style="width:225px" %)(% style="color:red" %)**Red led**(%%) will solid on for 5 seconds. Means device is in Deep Sleep Mode.
109	109
110		-
111	111	== 1.6 BLE connection ==
112	112
113	113
...	...	@@ -293,7 +293,6 @@
293	293	1. All modes share the same Payload Explanation from HERE.
294	294	1. By default, the device will send an uplink message every 20 minutes.
295	295
296		-
297	297	==== 2.3.2.1  MOD~=1 (Default Mode) ====
298	298
299	299
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704	704
705	705	[[image:http://wiki.dragino.com/xwiki/bin/download/Main/User%20Manual%20for%20LoRaWAN%20End%20Nodes/LSN50%20%26%20LSN50-V2%20-%20LoRaWAN%20Sensor%20Node%20User%20Manual/WebHome/1656379339508-835.png?rev=1.1||alt="1656379339508-835.png"]]
706	706
	703	+
707	707	In MOD=1, user can use byte 6 to see the status for door open or close. TTN V3 decoder is as below:
708	708
709	709	door= (bytes[6] & 0x80)? "CLOSE":"OPEN";
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711	711
712	712	==== 2.3.3.6 I2C Interface (SHT20 & SHT31) ====
713	713
	711	+
714	714	The SDA and SCK are I2C interface lines. You can use these to connect to an I2C device and get the sensor data.
715	715
716	716	We have made an example to show how to use the I2C interface to connect to the SHT20/ SHT31 Temperature and Humidity Sensor.
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739	739
740	740	==== 2.3.3.7  ​Distance Reading ====
741	741
	740	+
742	742	Refer [[Ultrasonic Sensor section>>||anchor="H2.3.3.8UltrasonicSensor"]].
743	743
744	744
745	745	==== 2.3.3.8 Ultrasonic Sensor ====
746	746
	746	+
747	747	This Fundamental Principles of this sensor can be found at this link: [[https:~~/~~/wiki.dfrobot.com/Weather_-_proof_Ultrasonic_Sensor_with_Separate_Probe_SKU~~_~~__SEN0208>>url:https://wiki.dfrobot.com/Weather_-_proof_Ultrasonic_Sensor_with_Separate_Probe_SKU___SEN0208]]
748	748
749	749	The SN50_v3 detects the pulse width of the sensor and converts it to mm output. The accuracy will be within 1 centimeter. The usable range (the distance between the ultrasonic probe and the measured object) is between 24cm and 600cm.
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754	754
755	755	[[image:image-20230512173903-6.png||height="596" width="715"]]
756	756
	757	+
757	757	Connect to the SN50_v3 and run (% style="color:blue" %)**AT+MOD=2**(%%) to switch to ultrasonic mode (ULT).
758	758
759	759	The ultrasonic sensor uses the 8^^th^^ and 9^^th^^ byte for the measurement value.
...	...	@@ -766,11 +766,13 @@
766	766
767	767	==== 2.3.3.9  Battery Output - BAT pin ====
768	768
	770	+
769	769	The BAT pin of SN50v3 is connected to the Battery directly. If users want to use BAT pin to power an external sensor. User need to make sure the external sensor is of low power consumption. Because the BAT pin is always open. If the external sensor is of high power consumption. the battery of SN50v3-LB will run out very soon.
770	770
771	771
772	772	==== 2.3.3.10  +5V Output ====
773	773
	776	+
774	774	SN50v3 will enable +5V output before all sampling and disable the +5v after all sampling.
775	775
776	776	The 5V output time can be controlled by AT Command.
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785	785
786	786	==== 2.3.3.11  BH1750 Illumination Sensor ====
787	787
	791	+
788	788	MOD=1 support this sensor. The sensor value is in the 8^^th^^ and 9^^th^^ bytes.
789	789
790	790	[[image:image-20230512172447-4.png||height="416" width="712"]]