RS-485 version 24G MMWAVE Presence and motion detectors with flush mounting

Place of Origin Shenzhen, China
Brand Name Merrytek
Certification CE
Model Number MSA237D 99 485
Minimum Order Quantity 100PCS
Price Negotiation
Packaging Details White box+ White box tags+ Clapboard+ Carton(K=A)
Delivery Time 1, Sample and small order: Within 5 working days after receiving your payment. 2, Bulk order: 3-4 weeks after receiving deposit.
Payment Terms T/T
Supply Ability 10000 pcs/month

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Product Details
Working Voltage 12-24Vdc Working Mode RS485 Version
Mounting Height 2.5-4.0m Life Time 5 Years Warranty@Ta 230V Full Load
Working Power ≤1.2W Working Frequency 24GHz ±24.25GHz
Detecting Type Major/Minor/Micro Motion Detection Mounting Flush Mounting
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RS-485 motion detector flush mount

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24G MMWAVE presence sensor

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flush mount presence detectors

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Product Description
RS-485 version 24G MMWAVE Presence and Motion Detectors with Flush Mounting
Product Attributes
Attribute Value
Working voltage 12-24Vdc
Working mode RS485 version
Mounting height 2.5-4.0m
Life time 5 years warranty@Ta 230V full load
Working Power ≤1.2W
Working frequency 24GHz ±24.25GHz
Detecting type Major/Minor/Micro Motion detection
Mounting Flush mounting
Technical Parameters
Input/Output
Input voltage 12-24V DC
Rated voltage 24V DC
Working Current @12Vdc:80±3mA @24Vdc:42±3mA
Working Power ≤1.2W @24V DC
Output signal RS-485 (factory setting is data report mode)
Load type Data report/data inquiry
Sensor Parameter
Radar frequency 24GHz -24.25GHz, ISM band
Transmitting Power 5mW Max.
Detection Area 0-4m (setting by merrytek mini program)
Hold Time 3-7200s (setting by Merrytek mini program)
Daylight threshold 5-2000Lux (setting by merrytek mini program)
Daylight sensor range 0-2000Lux
Radius detection range 4±0.5m (based on 41㎡ open area test)
Sensitivity high/medium/low
Remote control Unavailable
Merrytek mini program Available
Mounting height 2.5-4.0m (typical value: 3m)
Detecting Angle 120°
Application Environment
Drill hole Φ50-55mm
Working Temperature 0℃...+50℃
Storage Temperature -25℃~+80℃ Humidity:≤85% (non-condensation)
Certificate Standard
Certificate FCC/RED
Environmental Requirement Compliant with RoHS
IP Rating IP20
Guarantee 5 year (only for product quality problem)
Product Function
RS-485 version 24G MMWAVE Presence and motion detectors with flush mounting 0
Dimension
RS-485 version 24G MMWAVE Presence and motion detectors with flush mounting 1
Wiring
RS-485 version 24G MMWAVE Presence and motion detectors with flush mounting 2
Wiring Layout Suggestions
  • Hand-in-hand wiring is highly recommended, yet star-topology or tree-topology is strongly deprecated
  • RS-485 layout wire length shall not be longer than 300m, and 12 pcs of sensors is the maximum quantity layout in one circuit
  • 4-pin shield wire or class 6 network wire is highly recommended for the layout
  • Our sensor doesn't have terminal resistance. If there's an impedance matching problem in the RS-485 bus, we recommend connecting 2 pieces of 120Ω resistance in the terminal
Detection
RS-485 version 24G MMWAVE Presence and motion detectors with flush mounting 3
Initialization

When powered on, the sensor indicator will stay on for 15s for recognizing the application room size, after that sensor will enter a 10s flashing self-checking phase, after that, it will enter a 20s detection cycle. If presence is detected, the sensor will report absence. During initialization, the sensor will not detect a moving signal, and you can use the Merrytek WeChat mini program to adjust the detection area, hold time, daylight sensor, etc, parameters.

Installation Instructions

Embedded mounting installation

  1. Trepanning a 50-55mm hole
  2. Securely wire the cable into the terminal
  3. Press the program button
  4. Put the spring clip into the hole and fasten it well
  5. Ensure the sensor is firmly installed
RS-485 version 24G MMWAVE Presence and motion detectors with flush mounting 4
Factory Default Setting

Detection Area: 4m | Hold Time: 30S | Indicator Light: open | Sensitivity: medium sensitivity

RS-485 Protocol

Details can be found on the specs.