KERUI HW19 PIR Motion Sensor Detector Alarm with Alarm Sound / Doorbell Ring Remote Control to Arm/Disarm SOS for Elder Kids
SPECIFICATIONS
Brand Name: KERUI
Certification: CE
Choice: yes
High-concerned chemical: none
Model Number: HW19
Origin: Mainland China
KERUI Infrared Motion Sensor Detetor Alarm with Remote Control to Arm/Disarm
This wireless infrared motion alarm has two modes: alarm and doorbell. It can be switched by pressing the S key on the remote control or by short pressing the setting key on the side of the infrared host.




Low Battery Warning
When the battery of the PIR sensor alarm is low, it will emit three warning beeps every 30 seconds as a reminder.

Working Mode Description
Arming and Disarming
Press the "Setting" button once to toggle between arming and disarming.
(1) One beep means entering armed status, with the red LED lighting up for 1 second, followed by a 10-second countdown during which the red LED flashes.
(2) Two beeps mean exiting armed status (disarmed), with the green LED lighting up for 1 second.
Pairing Mode:
Press and hold the "Setting" button for 3 seconds to entering pairing mode. The blue LED will light up to indicate pairing mode is active. The LED will turn off automatically when pairing mode exits.
Alarm Mode:
When alarmed, the infrared trigger (PIR) will activate the alarm, sound the alarm, and the red LED will light up for 30 seconds. When disarmed, the infrared trigger (PIR) will not respond.
Doorbell Mode:
When alarmed, the infrared trigger (PIR) will activate the alarm, sound the alarm, and the red LED will light up for 30 seconds.
When disarmed, after a trigger is detected, the allarm will sound a "dingdong" and the Turquoise LED will light up for 3 seconds.
Specification:
* Remote Pairing Capacity: up to 25pcs remote control
* Power Supply: 3*AAA battery (included) / DC5V/1A Type-c (not included)
* Battery Life: 4-6 months
* Standby Current: ≤100uA
* Alarm Current: ≤300mA
* Alarm Sound: up to 100dB (within 20cm)
* Detection Range: 60°H/110°V (0.5 - 9 meters)
* Material: ABS
* Wireless Frequency: 433MH (1527 protocol)
* Wireless Transmission: up to 120 meters (in open space)
* Working Temperature: -10~ 45 °C
* Working Humidity: ≤80% (No condensation)
- Standard Shipping: Standard Shipping (12–18 Business Days)
- Express Shipping: Expedited Shipping (5–9 Business Days)
- Free Shipping: Orders over $199 qualify automatically
- Tracking: Full tracking number provided for all orders
- Returns: 30-day hassle-free return window
- Condition: Items must be unused and in original packaging
- Refund: Full refund processed within 3-5 business days
- Factory Direct: ISO/TS 16949 certified manufacturer
- Quality: 100% electrical continuity tested before shipment
- Experience: 15+ years in automotive connector industry
- Support: Professional technical support available
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