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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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95	95	[[image:image-20220610154839-1.png]]
96	96
97	97	(((
98		-**Remarks: (1) a. When the ambient temperature is 0-39 ℃, the maximum humidity is 90% (non-condensing);  b. When the ambient temperature is 40-50 ℃, the highest humidity is the highest humidity in the natural world at the current temperature (no condensation)**
	97	+**Remarks: (1) a. When the ambient temperature is 0-39 ℃, the maximum humidity is 90% (non-condensing);  b. When the ambient temperature is 40-50 ℃, the highest humidity is the highest humidity in the natural world at the current temperature (no condensation)**
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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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129	129	* Sewer
130	130	* Bottom water level monitoring
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	133	+
	134	+
132	132	== 1.6  Pin mapping and power on ==
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134	134
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175	175	[[image:image-20220607170145-1.jpeg]]
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	181	+(((
178	178	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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179	179
	185	+(((
180	180	Enter these keys in the LoRaWAN Server portal. Below is TTN V3 screen shot:
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181	181
	189	+(((
182	182	**Add APP EUI in the application**
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183	183
184	184	[[image:image-20220610161353-4.png]]
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222	222	== 2.3  ​Uplink Payload ==
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224	224	(((
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225	225	LDDS75 will uplink payload via LoRaWAN with below payload format:
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226	226
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227	227	Uplink payload includes in total 4 bytes.
228	228	Payload for firmware version v1.1.4. . Before v1.1.3, there is on two fields: BAT and Distance
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261	261
262	262	=== 2.3.2  Distance ===
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	277	+(((
264	264	Get the distance. Flat object range 280mm - 7500mm.
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	281	+(((
266	266	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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269	269	* If the sensor value is 0x0000, it means system doesn’t detect ultrasonic sensor.
270	270	* 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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	291	+
272	272	=== 2.3.3  Interrupt Pin ===
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274	274	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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1040	1040	* Example 1: Downlink Payload: 06000000 ~/~/ Turn off interrupt mode
1041	1041	* Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
1042	1042
1043		-
1044	1044	= 4.  FAQ =
1045	1045
1046	1046	== 4.1  What is the frequency plan for LDDS75? ==
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1100	1100	* (% style="color:red" %)**4 **(%%)**: **4000mAh battery
1101	1101	* (% style="color:red" %)**8 **(%%)**:** 8500mAh battery
1102	1102
1103		-
1104	1104	= 7. ​ Packing Info =
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1115	1115	* Package Size / pcs : cm
1116	1116	* Weight / pcs : g
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1118		-
1119	1119	= 8.  ​Support =
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1121	1121	* 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.