Low-mounting PIR motion sensor (dry contact version)
MSA238D IR is an compact PIR motion sensor with daylight detection function. Combined with the unique software algorithm of Merrytek, it can accurately detect human movements in almost all indoor spaces to trigger smart scene application in smart home, smart hotel and smart office.
| Input/Output | Input voltage | 12-24V DC |
| Rated voltage | 12/24V DC | |
| Working current | 20mA max | |
| Power consumption | ≤0.5W @12/24V DC | |
| Output signal | NO/NC dry contact (Factory setting is NO dry contact) | |
| Sensor parameter | Function | PIR motion detection+ daylight sensor |
| Detection Area | Remote setting: 100%/75%/50%/25% | |
| Hold Time | Remote setting: 2s/1min/3min/5min/10min/30min | |
| Daylight Sensor Threshold | Remote setting: 15lux/50lux/Disable | |
| Radius detection range(based on 100% sensitivity) | Tangential moving based on 3m high installation: 0-2m from long side,0-0.5m from short side @25℃（radial moving detection range will shorten） | |
| Remote control | Available | |
| Mounting height | 2.5-4m typical value:3m | |
| Application environment | Drill hole | Φ45mm |
| Working temperature | -25℃…+50℃(detection range might differ based on different temperature ) | |
| Storage temperature | -40℃~+80℃ | |
| Warranty | 3 years（available due to product quality problem under indoor application） | |
| Certificate Standard | Certificate | Compliant to CE |
| Environmental requirements | Compliant to RoHS | |
| IP rating | IP20 |
Dimension
Initialization
When power on,our sensor will enter self-checking mode and will not respond to any motion movement for 10s,within when K1 K2 terminal will be conducting. After 10s,our sensor will detect if there’s movement trigger. If no movement detected,K1 K2 terminal will disconnect,if movement detected, K1 K2 terminal will remain conducting until no movement detected and hold time passed.All sensor parameter such as detection range,hold time etc can be set by remote.
Factory setting
Detection Area:100%, Hold Time: 2s, Daylight Sensor: Disable
Detection Signal
The product detects human moving signals and below is a description of the moving signals:
Wiring layout suggestion：
