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35		-The Dragino LDDS45 is a (% style="color:#4472c4" %)** LoRaWAN Distance Detection Sensor**(%%) for Internet of Things solution. It is used to measure the distance between the sensor and a flat object. The distance detection sensor is a module that uses (% style="color:#4472c4" %)**ultrasonic sensing** (%%)technology for distance measurement, and (% style="color:#4472c4" %)** temperature compensation**(%%) is performed internally to improve the reliability of data. The LDDS45 can be applied to scenarios such as horizontal distance measurement, liquid level measurement, parking management system, object proximity and presence detection, intelligent trash can management system, robot obstacle avoidance, automatic control, sewer, bottom water level monitoring, etc.
	35	+The Dragino LDDS45 is a (% style="color:#4472c4" %)** LoRaWAN Distance Detection Sensor**(%%) for Internet of Things solution. It is used to measure the distance between the sensor and a flat object. The distance detection sensor is a module that uses (% style="color:#4472c4" %)** ultrasonic sensing** (%%)technology for distance measurement, and (% style="color:#4472c4" %)** temperature compensation**(%%) is performed internally to improve the reliability of data. The LDDS45 can be applied to scenarios such as horizontal distance measurement, liquid level measurement, parking management system, object proximity and presence detection, intelligent trash can management system, robot obstacle avoidance, automatic control, sewer, bottom water level monitoring, etc.
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104	104	== 1.3  Specification ==
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106	106	=== 1.3.1  Rated environmental conditions ===
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112		-**Remarks: (1)  a. When the ambient temperature is 0-39 ℃, the maximum humidity is 90% (non-condensing);       **
	113	+**Remarks: (1) a. When the ambient temperature is 0-39 ℃, the maximum humidity is 90% (non-condensing);       **
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114	114	**~ 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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152	152	== 1.6  Pin mapping and power on ==
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261	261	LDDS45 will uplink payload via LoRaWAN with below payload format:
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265	265	Uplink payload includes in total 8 bytes.
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312	312	* If the sensor value is 0x0000, it means system doesn’t detect ultrasonic sensor.
313	313	* If the sensor value lower than 0x001E (30mm), the sensor value will be 0x00.
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317	317	=== 2.3.3  Interrupt Pin ===
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319	319	This data field shows if this packet is generated by interrupt or not. [[Click here>>||anchor="H4.3A0SetInterruptMode"]] for the hardware and software set up.
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1023		-AT Command Connection: See [[FAQ>>||anchor="H5.A0FAQ"]].
	1019	+AT Command Connection: See [[FAQ>>||anchor="H4.A0FAQ"]].
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1162	1162	* Example 2: Downlink Payload: 06000003 ~/~/ Set the interrupt mode to rising edge trigger
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1165	1165	= 5.  FAQ =
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1167	1167	== 5.1  What is the frequency plan for LDDS45? ==
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1206	1206	* (% style="color:red" %)**CN470 **(%%)**:** LoRaWAN CN470 band
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1209	1209	= 8. ​ Packing Info =
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1221	1221	* Weight / pcs : g
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1224	1224	= 9.  ​Support =
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1226	1226	* 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.