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Price: $38.99
(as of Sep 16, 2026 02:51:37 UTC – Details)
Product description
SanJie 110dB Loud Motion Sensor Alarm 
How to set product parameters
Chime / Alarm mode switch20 ringtones to choose fromVolume adjustment from 0 to 110 dB
The video showcases the product in use.The video guides you through product setup.The video compares multiple products.The video shows the product being unpacked. How To Set Product Parameters
How to use the remote control
Arming, disarming and silencing alarms remotely using the remote control
The video showcases the product in use.The video guides you through product setup.The video compares multiple products.The video shows the product being unpacked. How to use the remote control
1 Entry Alarm
2 Home Security
3 Pet Monitoring
1 2 in 1 ALARM/CHIME
2 Remote Control
Installation & Pairing
Will the remote trigger the alarm accidentally if I keep it in my pocket?
No. The remote buttons are designed with a protective cover to help prevent accidental pressing when carried in a pocket, bag, or with keys.
How can I confirm that the device is armed?
After pressing the Lock button on the remote, the unit will beep 1 time and the LED indicator will flash 4 times. This means the device has entered real-time monitoring mode.
Since it uses batteries, what is the Type-C port for?
For long-term monitoring needs (such as garages or RVs),you can connect a Type-C power cable for continuous power supply. In this case, the batteries serve as backup power during outages. It is recommended to check the battery status every 3 months.
If I walk past the sensor twice in a row, how long is the delay before the second alarm?
After the first alarm, the system performs a 5-second environmental calibration to reduce false alarms. After 5 seconds, if human movement is still detected, the alarm will sound again immediately.
How can I tell if the batteries are low?
When the battery voltage drops below 2.4V, any motion detection or button operation will trigger a low-battery warning: the unit will emit “ding” and the LED light will flash four times.
【Powerful Deterrence, Garage Protection】When the motion sensor alarm detects movement in the garage, it instantly sounds a powerful 110dB siren to alert your family and help deter intruders. This motion alarm adds another layer of protection for vehicles, tools, and valuables, helping your family rest easier.
【Multi-Space Protection, Ready When Needed】This wireless motion sensor is suitable for homes, garages, sheds, vans, RVs, shops, and other indoor spaces. Unlike fixed motion detectors, it can be quickly deployed for daily security, travel, moving, or temporary stays, giving you added peace of mind in different settings.
【Two Modes for Welcome and Night Security】In Chime mode, the motion sensor door chime gently alerts staff when customers arrive without disturbing visitors, allowing the Motion Sensor Doorbell to support smoother service. In Alarm mode, it is ideal for women living alone at night, sounding a loud alarm when unusual movement is detected to help deter strangers and alert family members.
【Remote Control, Easier High Placement】When the motion detector alarm is installed high in a garage or shed, there is no need to climb a ladder repeatedly. In an open indoor area, the remote controls the motion detector from up to 262FT away for arming, disarming, muting, and chime selection. Press the chime button to stop an active alarm, making operation easier for people with limited mobility.
【Flexible Installation, Dual Power】This motion sensor alarm indoor mounts on a wall with adhesive or screws, or sits on a table, shelf, or inside a vehicle. Use the included AA batteries for travel, vehicles, or places without outlets, or power the motion sensor indoor with the included Type-C cable for long-term home or garage use, allowing easy and reassuring setup in different environments.
【Wide-Angle Detection, Fewer Blind Spots】Built-in PIR technology allows the door motion sensor to detect movement from about 7–23FT across a 120° angle. The unit rotates 360°, letting the motion sensors aim at key areas based on the space, so alerts are more timely and everyday protection feels more reassuring.
【No WiFi, Reliable in Weak-Signal Areas】This motion alarm indoor requires no app, hub, or WiFi and operates directly by remote control. The built-in motion sensor provides independent alerts in garages, sheds, and other weak-signal areas, keeping security simple and reliable.
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