SanJie Pool Door Alarm wireless magnetic sensor — White, adjustable volume & remote for child and senior safety

SanJie Pool Door Alarm is a wireless magnetic sensor and chime system that alerts you when doors or windows open, designed to help prevent accidental pool access, wandering by children or seniors, and unauthorized entry.

Whether you want extra oversight at a pool gate, a quick alert when a child opens a sliding door, or a remote SOS option for dementia care, this compact SanJie unit offers adjustable volume, four distinct operating modes, and a remote control for added convenience. It installs without tools using included double-sided tape and runs on two AAA batteries for long-life monitoring.

How does the SanJie alarm protect pool areas and busy homes?

The alarm triggers when the magnetic contact separates, sending an audible alert or chime depending on the selected mode. It’s intended as an awareness device to reduce unnoticed exits through doors or gates that lead to hazardous spaces like pools.

• Magnetic sensor detects opening and separation
• Up to 120 dB volume with five-level adjustment
• One-minute continuous alarm option for urgent alerts
• Easy adhesive install on gates, doors, or pool fences

What are the operating modes and when should I use each?

SanJie provides four selectable modes to match different home routines: instant alarm, entry chime, door-closing reminder, and continuous alarm. Choose a mode for quiet monitoring, welcoming guests, or persistent alerts when attention is critical.

• Mode 1 — Instant Alarm: sounds only while the door is open
• Mode 2 — Enter Chime: single ding-dong when opened
• Mode 3 — Close Reminder: periodic beep until the door is shut
• Mode 4 — Continuous: one-minute persistent alarm on opening

How easy is installation and everyday use?

Installation requires no wiring or tools: peel the backing from the included double-sided tape, stick the sensor and magnet in alignment, then power on. Battery-powered operation and adjustable volume make it suitable for many locations and household needs.

• Peel-and-stick mounting for quick setup
• Powered by 2 AAA batteries with 12+ month typical life
• Five volume settings from mute to 120 dB
• Low-battery reminder to prompt replacement

Can this alarm help with elderly care and remote alerts?

Yes. In addition to door sensing, the system includes a one-touch SOS emergency alert and a remote control that can arm, disarm, or trigger the alarm from up to about 82 feet. It's a convenient option to notify family quickly if an older person wanders or needs help.

• SOS emergency button for immediate alerting
• Remote range up to ~82 ft for convenient control
• Remote arms, disarms, and triggers alarms as needed
• Useful for caregivers, apartments, RVs, and offices

Who is this for? Families with young children, caregivers for people with dementia or memory challenges, homeowners seeking added pool-gate awareness, and anyone wanting a simple wireless alert system will find the SanJie Pool Door Alarm helpful. It’s best used as a layer of awareness alongside active supervision and compliant safety measures. Note: many customers use it on pool access gates, but this product is not UL2017 certified and should not replace required safety barriers or professional life-safety systems. If you receive the wrong set, contact customer support immediately for assistance.