Any advice on how to use sensors on a metal mailbox? The metal seems to be disrupting the magnetic sensors from working.

I would mount the magnetic sensor INSIDE the metal mailbox, route the wire thru a small hole UNDER the mailbox, and mount the TX transmit device inside a small weather proof external plastic box.this could be mounted on the side of the post holding the mailbox, not seen from streets. The cost would be minimal. The sensor would take up minimal footprint inside the mailbox, the wires secured/routed to the mailbox metal via silicon glue, keeping them out of the way. This is what I would do, personally. Hopefully, this will give you ideas to consider.

Is it there any picture of the product installed?

Yes, we have an installed picture. Please kindly contact us for more information. As for the installation of the Outdoor Contact Sensor, please kindly refer to the following guide http://www.yosmart.com/support/YS7707-UC/docs/instruction

Can the " open too long" feature be disabled for part of the day?

You can customize an alarm strategy for the YoLink contact sensor, turn on the "Do not disturb" and set the time you do not want to receive notifications including the "Open Remind".

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Description

🔐 Secure Smarter, Live Freer — The Future of Outdoor Protection

SET IT AND FORGET IT - Powered by 2 AA batteries with 5+ years standby life—maintenance-free peace of mind.
WEATHERPROOF RUGGED - IP63-rated for reliable outdoor use in rain, dust, and extreme temps (-20°C to 50°C).
SMART ALERTS ZERO FEES - Instant email, SMS & push notifications keep you informed—no monthly monitoring costs.
EXTEND YOUR SECURITY PERIMETER - Cover gates, sheds & remote buildings with ultra-long 1/4 mile wireless range—no wiring needed.
SEAMLESS SMART HOME INTEGRATION - Works with Alexa, IFTTT & Home Assistant for effortless automation and control.

The YOLINK LoRa Smart Outdoor Contact Sensor offers a robust, wireless security solution with a remarkable 1/4 mile range using LoRa technology. Designed for outdoor use with IP63 waterproofing and a wide operating temperature range, it runs on 2 AA batteries lasting over 5 years. Compatible with Alexa, IFTTT, and Home Assistant, it delivers instant alerts via email, SMS, and push notifications without monthly fees, making it ideal for gates, sheds, and remote property monitoring.

Specifications

Brand	YoLink
Colour	Black
Power Source	Battery Powered
Compatible Devices	Smartphone
Connectivity Technology	Wireless
Installation Type	Outdoor
Alert Type	Audio Only, Motion Only
Voltage	3 Volts (DC)
Control Method	App
Battery Cell Composition	Alkaline
Maximum Range	1.32E+3 Feet
Battery Life	5 Years
Included Components	Battery, Siren
Net Quantity	1.0 Count
Sensor Technology	LoRa
Global Trade Identification Number	00850024791022
UPC	850024791022
Manufacturer	YOSMART
Model	YS7707-UC
Package Dimensions	8.6 x 7.9 x 3.2 cm; 110 g
Batteries	2 AAA batteries required. (included)
Item model number	YS7707-UC
Remote Control Description	Radio
Battery Description	Alkaline
Batteries Included	Yes
Batteries Required	Yes
Mounting Type	Door Mount
Manufacturer	YOSMART
Item Weight	110 g

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