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87	87	* 4000mAh or 8500mAh Battery for long term use
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	90	+
90	90	== 1.3  Specification ==
91	91
92	92	=== 1.3.1  Rated environmental conditions ===
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111	111
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.**
114		-)))
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117	117	[[image:1654852175653-550.png]](% style="display:none" %) ** **
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	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		-(((
182	182	For OTAA registration, we need to set **APP EUI/ APP KEY/ DEV EUI**. Some server might no need to set APP EUI.
183		-)))
184	184
185		-(((
186	186	Enter these keys in the LoRaWAN Server portal. Below is TTN V3 screen shot:
187		-)))
188	188
189		-(((
190	190	**Add APP EUI in the application**
191		-)))
192	192
193	193	[[image:image-20220610161353-4.png]]
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231	231	== 2.3  ​Uplink Payload ==
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233	233	(((
234		-(((
235	235	LDDS75 will uplink payload via LoRaWAN with below payload format:
236		-)))
237	237
238		-(((
239	239	Uplink payload includes in total 4 bytes.
240	240	Payload for firmware version v1.1.4. . Before v1.1.3, there is on two fields: BAT and Distance
241	241	)))
242		-)))
243	243
244	244	(((
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274	274
275	275	=== 2.3.2  Distance ===
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277		-(((
278	278	Get the distance. Flat object range 280mm - 7500mm.
279		-)))
280	280
281		-(((
282	282	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.**
283		-)))
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285	285
286	286	* If the sensor value is 0x0000, it means system doesn’t detect ultrasonic sensor.
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1057	1057	* Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
1058	1058	* Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
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	1046	+
1060	1060	= 4.  FAQ =
1061	1061
1062	1062	== 4.1  What is the frequency plan for LDDS75? ==
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1116	1116	* (% style="color:red" %)**4 **(%%)**: **4000mAh battery
1117	1117	* (% style="color:red" %)**8 **(%%)**:** 8500mAh battery
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1119	1119	= 7. ​ Packing Info =
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1130	1130	* Package Size / pcs : cm
1131	1131	* Weight / pcs : g
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1133	1133	= 8.  ​Support =
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1135	1135	* 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.