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87	87	* 4000mAh or 8500mAh Battery for long term use
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89	89
90		-
91	91	== 1.3  Specification ==
92	92
93	93	=== 1.3.1  Rated environmental conditions ===
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	112	+(((
113	113	**(2)** **The object to be tested is a "corrugated cardboard box" perpendicular to the central axis of 0 °, and the length * width is 60cm * 50cm.**
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116	116	[[image:1654852175653-550.png]](% style="display:none" %) ** **
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133	133
134		-
135	135	== 1.6  Pin mapping and power on ==
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178	178	[[image:image-20220607170145-1.jpeg]]
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	181	+(((
181	181	For OTAA registration, we need to set **APP EUI/ APP KEY/ DEV EUI**. Some server might no need to set APP EUI.
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183	183	Enter these keys in the LoRaWAN Server portal. Below is TTN V3 screen shot:
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185	185	**Add APP EUI in the application**
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186	186
187	187	[[image:image-20220610161353-4.png]]
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225	225	== 2.3  ​Uplink Payload ==
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227	227	(((
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228	228	LDDS75 will uplink payload via LoRaWAN with below payload format:
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229	229
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230	230	Uplink payload includes in total 4 bytes.
231	231	Payload for firmware version v1.1.4. . Before v1.1.3, there is on two fields: BAT and Distance
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264	264
265	265	=== 2.3.2  Distance ===
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	277	+(((
267	267	Get the distance. Flat object range 280mm - 7500mm.
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269	269	For example, if the data you get from the register is 0x0B 0x05, the distance between the sensor and the measured object is(% style="color:#4472c4" %)** 0B05(H) = 2821 (D) = 2821 mm.**
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272	272	* If the sensor value is 0x0000, it means system doesn’t detect ultrasonic sensor.
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1043	1043	* Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
1044	1044	* Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
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1046		-
1047	1047	= 4.  FAQ =
1048	1048
1049	1049	== 4.1  What is the frequency plan for LDDS75? ==
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1103	1103	* (% style="color:red" %)**4 **(%%)**: **4000mAh battery
1104	1104	* (% style="color:red" %)**8 **(%%)**:** 8500mAh battery
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1106		-
1107	1107	= 7. ​ Packing Info =
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1118	1118	* Package Size / pcs : cm
1119	1119	* Weight / pcs : g
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1121		-
1122	1122	= 8.  ​Support =
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1124	1124	* Support is provided Monday to Friday, from 09:00 to 18:00 GMT+8. Due to different timezones we cannot offer live support. However, your questions will be answered as soon as possible in the before-mentioned schedule.