MOCREO MS3 Refrigerator Thermometer, Upgraded Replacement for MS1 & ST5, 168-Hour Offline Data Logging, 0.9mm Ultra-Flat Probe, 2-Year Battery Life, Wireless Temperature Sensor (MOCREO Hub Required)

Never worry about spoiled food or unexpected power outages again. The MOCREO MS3 WiFi Refrigerator Thermometer delivers 24/7 remote monitoring via the MOCREO Smart App — check real-time fridge and freezer temperatures from anywhere, anytime.When temperatures go out of range, three independent alert channels fire at once: an App push notification, an email, and a loud 90dB hub buzzer. The Power Outage Alert instantly notifies you when power is lost or restored with exact timestamps, while 168-hour local data storage records the full temperature history even without WiFi — so you can review exactly what happened after any storm or outage.The 0.9mm ultra-flat probe slides through door seals without causing air leaks or frost buildup, and ±0.9°F industrial-grade accuracy ensures reliable long-term performance across -40°F to 158°F. Smart delay timers filter out false alarms from door openings or defrost cycles, and iOS Critical Alerts reach you even in Silent mode.Runs up to 2 years on 3 AAA batteries, with free 2-year cloud data storage and no subscription fees. One hub supports up to 30 sensors for whole-home coverage, and Alexa compatibility lets you check temperatures hands-free.

• Upgraded Replacement for MS1 & ST5 — Now with LCD Display & 168-Hour Offline Data Logging: The MS3 is a significant upgrade over MS1 and ST5 sensors, adding a built-in LCD screen for at-a-glance readings and 168-hour local data storage that works even without WiFi or power. Compatible with all MOCREO Hubs (sold separately) within a 131 ft range.
• 168-Hour Offline Data Logging — See Exactly What Happened During Any Outage: Unlike standard freezer thermometer sensors, the MS3 continues recording temperature data locally even without WiFi or power. After power returns, review the full 168-hour temperature history and make a confident decision about your food or breast milk. No more guessing after a storm or outage.
• Power Outage Alert — Instant Notification When Power Goes Out (MOCREO Hub Required): When a power outage occurs, the MOCREO Hub instantly sends an app notification and email alert with the exact time power went out and came back on — so you can act immediately to protect what's stored in your fridge or freezer. Note: Power Outage Alert requires a MOCREO Hub connected to your home network.
• Designed for Fridge & Freezer Doors: The 4.9 ft probe cable is only 0.9mm thin, sliding cleanly through refrigerator and freezer door seals without breaking the cold air seal or causing frost buildup. Easy to install, easy to trust.
• Industrial-Grade Accuracy Across a Wide Temperature Range: Built with an industrial grade chip, the MS3 delivers ±0.9°F accuracy across -40°F to 158°F — reliable for home kitchens, garage fridges, and commercial use alike.
• 2-Year Battery Life — Long-Term Monitoring Without Interruption: Powered by 3 AAA replaceable batteries (included), the MS3 sensor runs over 2 years on a single set with low-power connection technology. Low battery alerts notify you in advance so your monitoring never goes offline unexpectedly.
• Versatile Magnetic Mounting for Any Space: The MS3 sensor features a magnetic backing that snaps securely onto any metal surface — inside or outside your fridge, freezer, or cabinet. No tools, no adhesive, easy to reposition whenever needed. Perfect for home kitchens and garage fridges.