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87	87	* 4000mAh or 8500mAh Battery for long term use
88	88
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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137	137
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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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182	182
	185	+(((
183	183	Enter these keys in the LoRaWAN Server portal. Below is TTN V3 screen shot:
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	189	+(((
185	185	**Add APP EUI in the application**
	191	+)))
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	(((
	234	+(((
228	228	LDDS75 will uplink payload via LoRaWAN with below payload format:
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229	229
	238	+(((
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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	242	+)))
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234	234	(((
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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.
273	273	* If the sensor value lower than 0x0118 (280mm), the sensor value will be invalid. Since v1.1.4, all value lower than 280mm will be set to 0x0014(20mm) which means the value is invalid.
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	289	+
	290	+
	291	+
275	275	=== 2.3.3  Interrupt Pin ===
276	276
277	277	This data field shows if this packet is generated by interrupt or not. [[Click here>>||anchor="H3.3A0SetInterruptMode"]] for the hardware and software set up.
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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
1045	1045
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
1105	1105
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.