Low-mounting PIR motion sensor(ON/OFF+Dry contact version)
MSA246S IR A2 is a low-mounting PIR motion sensor with daylight detection function. Combined with the unique software algorithm of Merrytek, it can accurately detect human movements in almost all scenario to trigger smart scene application.
| Input/Output | Input voltage | 220-240V AC |
| Rated voltage | 230V AC | |
| Working current | 20mA max | |
| Power consumption | ≤0.5W @230V AC | |
| Output signal | One channel ON/OFF(16A relay)+one channel Dry contact(can connect loading) | |
| Max surge voltage | 2KV(L/N,EN61000-4-5) | |
| Max surge current | 30A (50% Ipeak, twidth =500us, 230Vac full load, cold start) | |
| Max loading | ON/OFF terminal: Max 1200w resistive loading and 600w inductive loading @230Vac Dry contact terminal: Max 5A @24Vdc |
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| Sensor parameter | Function | PIR motion detection+ daylight sensor |
| Detection Area | Rotation switch/MH18 remote/MH10 remote setting: 100%/75%/50%/25% |
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| Hold Time | ON/OFF channel hold time(Rotation switch/MH18 remote/MH10 remote setting) Test 2s/30s/1min/5min/10min/30min Dry contact channel hold time(Rotation switch/MH18 remote/MH10 remote setting) Test 2s/30s/1min/3min/5min/10min/20min/30min |
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| Daylight Sensor | Rotation switch/MH18 remote/MH10 remote setting: 5Lux/15Lux/30Lux/50Lux/100Lux/150Lux/Disable |
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| Daylight threshold learning mode | When sensor enter daylight threshold learning mode,it’ll learn current environment’s daylight level and set it as threshold | |
| IQ mode | When sensor enter IQ mode.our sensor will auto set hold time based on sensor trigger frequency,hold time setting range is 10s-10min.
1.when current hold time is 10s and sensor triggered more than 3 times,hold time will auto set as 20s; |
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| Pulse mode | When sensor enter pulse mode.our sensor will keep on 2s and block sensing 8s when motion detected | |
| PUSH button control | Push button can set auto/semi-auto sensing mode,or you can also us locking button/MH18 remote to set auto/semi-auto sensing mode.(PUSH button can only set ON/OFF channel)
1.When locking button is pressed down,auto mode is set: 2.When locking button is pressed up,semi-auto mode is set: |
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| Radius detection range based on 100% detection range | 3m height installation: tangential movement at 1m/s speed: 4-5m @25℃ radial movement at 1m/s speed: 2-3m @25℃6m height installation: tangential movement at 1m/s speed: 4-5m @25℃ radial movement at 1m/s speed: 2-4m @25℃ |
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| Remote control | available(MH18 remote/MH10 remote) | |
| Mounting heights | 2.5-6m typical value: 3m | |
| Application environment | Drill hole | Φ65mm |
| Working temperature | -25℃…+50℃(detection range might differ based on different temperature ) | |
| Storage temperature | -25℃~+50℃, humidity ≤60%(non-condensation status) | |
| Warranty | 5 year(available based on product quality under indoor application) | |
| Certificate Standard | Certificate | Compliant to CE |
| Environmental requirements | Compliant to RoHS | |
| IP rating | IP20 |
Dimension
Initialization
When powered on,sensor indicator will turn off after flashing for 35s and will not detect moving signal during this time. After 35S,you can use our rotation switch or remote to adjust detection area, hold time and daylight sensor etc parameter.
Factory setting

Wiring layout suggestion:
N/A
