Holdpeak | Digital Clock Thermometer Hygrometer Indoor Outdoor -40~60℃ ±1℃ 100m Wireless Sensor Alarm for Home Greenhouse Office Reliable

【Indoor & Outdoor Dual-Channel Real-Time Monitoring】One main unit displays both indoor and outdoor temperature and humidity simultaneously. Includes a wireless remote sensor with a transmission range of up to 100 meters, so you can track outdoor conditions without ever stepping outside.【Large LCD Screen with Multi-Information Display】Large, high-contrast LCD screen clearly shows time, weekday, date, indoor/outdoor temperature and humidity, and more on a multi-line display. Features a backlight for easy reading in low-light conditions—just press a button to illuminate the screen at night.【3 Independent Alarms with Smart Modes】Built-in 3 independent alarms (A1/A2/A3) with three selectable modes: 7-day continuous, weekdays only, or weekends only. Perfect for different schedules—wake up on time for work or sleep in on weekends without disturbance.【USB + Battery Dual Power Supply】Main unit can be powered via USB 5V for continuous indoor use, or by 2×AAA batteries for portable placement. The outdoor sensor also runs on 2×AAA batteries, eliminating the need for messy wiring and offering flexible installation anywhere.【High-Precision Sensors with Reliable Data】Temperature accuracy of ±1.0℃ and humidity accuracy of ±5% RH. Stable 433MHz wireless signal penetrates walls for consistent data transmission. Durable ABS housing, wall-mountable or tabletop use—ideal for home, office, greenhouse, nursery, and more.Product Name: Digital Indoor/Outdoor Thermometer Hygrometer ClockDisplay: Large LCD color screen, clear multi-line displayFunctions: Time/week/date display, 3 sets of alarms, temperature/humidity max/min records, ℃/℉ switch, auto power saveTemperature SpecificationsIndoor Range: 0℃ ~ 50℃ / 32℉ ~ 122℉Outdoor Range: -40℃ ~ 60℃ / -40℉ ~ 140℉Accuracy: ±1.0℃ / ±1.8℉Resolution: 0.1℃ / 0.1℉Humidity SpecificationsIndoor/Outdoor Range: 10% ~ 99% RHAccuracy: ±5% RHResolution: 1% RHAlarm & Clock FeaturesAlarm: 3 independent alarms (A1/A2/A3) with 7-day, workday, weekend modesTime Format: 12/24-hour switchableAuto Exit: 10-second no-operation auto save and exitPower SupplyMain Unit: USB 5V power or 2×AAA batteries (not included)Remote Sensor: 2×AAA batteries (not included)Material & InstallationMaterial: ABS plasticMounting: Wall mountable or tabletop useColor: White