Can I submerge the sensor probe completely underwater for an aquarium?

No, you should not submerge this sensor probe completely underwater. While it is highly moisture-resistant for measuring air humidity in terrariums and incubators, it is not fully waterproof and prolonged submersion will damage the internal thermistor.

How do I install this thermometer into my custom wooden enclosure?

To install this thermometer, you need to cut a rectangular hole measuring exactly 46mm by 27mm into your enclosure panel. Once the hole is cut, simply push the display unit in from the front, and the flexible side clips will lock it securely in place.

Is the main LCD display unit resistant to high humidity?

The main LCD display unit is not sealed against high humidity or water splashes. You must mount the display unit on the dry exterior of your project box, routing only the 1.5m sensor probe into the humid environment.

How long do the included AG13 batteries typically last?

The two included AG13 (LR44) button cell batteries typically last between 6 to 12 months under normal operating conditions. When the LCD screen begins to dim or the readings become sluggish, it is time to slide open the rear compartment and replace the batteries.

Can I purchase this digital thermometer in bulk at your Hong Kong store?

Yes, the FY-12 LCD Digital Thermometer Hygrometer is available for bulk purchase at Sun Cheong Computer Co. Ltd. (新昌電腦有限公司) in Sham Shui Po. Our physical store frequently supplies STEM educators and reptile breeders with reliable environmental monitoring components.

FY-12 Panel Mount Thermometer Hygrometer

Name: FY-12 Panel Mount Thermometer Hygrometer | 1.5m Sensor Probe
Brand: Sun Cheong Computer Company Limited
SKU: 21TS001362
Price: 83.0 TWD
Availability: InStock

Short Product Description

The FY-12 LCD Digital Thermometer Hygrometer is a compact, panel-mounted environmental monitor designed for DIY incubators, reptile terrariums, and cigar humidors. Featuring a 1.5m external sensor probe, it delivers highly accurate temperature (-50°C to +70°C) and humidity (10% to 99%) readings on a clear LCD screen. Available for instant pickup at Sun Cheong Computer Co. Ltd.(新昌電腦有限公司) in Sham Shui Po, our technical staff can provide expert advice on integrating this module into your custom STEM enclosures and breeding boxes.

Key Features

External 1.5m Probe: Allows for remote monitoring of enclosed spaces without exposing the main display unit to extreme conditions.
Dual Climate Display: Simultaneously shows real-time temperature (-50°C to +70°C) and relative humidity (10% to 99%) on a clear LCD screen.
Rapid 10-Second Sampling: Updates environmental data every 10 seconds to provide immediate feedback on microclimate changes.
Snap-In Panel Mount: Designed with flexible side retention clips for seamless, flush installation into 46x27mm rectangular cutouts.
Battery Powered: Operates independently on two AG13 (LR44) button cell batteries (included) for true wireless placement.
Versatile Applications: Perfect for poultry incubators, reptile terrariums, cigar humidors, and DIY greenhouse projects.

Full Product Description

Precise Environmental Monitoring for DIY Projects

This LCD Digital Thermometer Hygrometer provides real-time, accurate climate data for your sensitive DIY enclosures. By utilizing a 1.5-meter external sensor probe, it allows you to monitor the internal temperature and humidity of incubators or terrariums without opening the lid and disrupting the microclimate. The compact, snap-in panel design makes it incredibly easy to flush-mount into custom acrylic or wooden project boxes, providing a clean and professional finish.

High-Accuracy Sensor with Fast Sampling

The external probe delivers precise readings with a temperature accuracy of ±1°C and a humidity accuracy of ±5%. The system updates the LCD display every 10 seconds, ensuring you are immediately aware of any sudden climate shifts in your poultry breeding or cigar storage setups. This rapid sampling rate is crucial for maintaining the strict environmental thresholds required for successful hatching or preservation.

Pro Tip from Our Technicians

Our Sham Shui Po technical team advises keeping the main LCD display unit away from direct moisture, as only the external plastic probe is designed to withstand high humidity. When installing this Panel Mount Thermometer into your custom enclosure, cut a rectangular hole measuring exactly 46mm x 27mm to ensure the side clips snap securely into place. The device runs on two AG13 (LR44) button cell batteries (included), which should be replaced annually to maintain optimal sensor calibration.

Technical Specifications

Model: FY-12
Product Type: LCD Digital Thermometer Hygrometer
Temperature Range: -50°C to +70°C (Accuracy: ±1°C, Resolution: 0.1°C)
Humidity Range: 10% to 99% RH (Accuracy: ±5%, Resolution: 1%)
Sampling Period: 10 seconds
Sensor Type: External Probe (Approx. 150cm cable length)
Power Supply: 2 x AG13 / LR44 Button Cell Batteries (Included)
Overall Dimensions: 48mm x 28.6mm x 15.2mm
Mounting Hole Size: 46mm x 27mm
Weight: 25g (excluding batteries)

Delivery Options

Local delivery within Hong Kong and in-store pickup.
Free shipping for orders of HK$400 or above; HK$35 shipping fee for orders below HK$400.
Shipped by SF Express, usually dispatched the same day for orders confirmed before 6:00 PM (Mon–Sat).
Estimated delivery time: 1–3 business days after dispatch (Hong Kong).
In-store pickup details (location and time) will be confirmed by email or phone message.
Delivery times are estimates and may be affected by weather or unforeseen circumstances.

FAQ Section

Can I submerge the sensor probe completely underwater for an aquarium?No, you should not submerge this sensor probe completely underwater. While it is highly moisture-resistant for measuring air humidity in terrariums and incubators, it is not fully waterproof and prolonged submersion will damage the internal thermistor.
How do I install this thermometer into my custom wooden enclosure?To install this thermometer, you need to cut a rectangular hole measuring exactly 46mm by 27mm into your enclosure panel. Once the hole is cut, simply push the display unit in from the front, and the flexible side clips will lock it securely in place.
Is the main LCD display unit resistant to high humidity?The main LCD display unit is not sealed against high humidity or water splashes. You must mount the display unit on the dry exterior of your project box, routing only the 1.5m sensor probe into the humid environment.
How long do the included AG13 batteries typically last?The two included AG13 (LR44) button cell batteries typically last between 6 to 12 months under normal operating conditions. When the LCD screen begins to dim or the readings become sluggish, it is time to slide open the rear compartment and replace the batteries.
Can I purchase this digital thermometer in bulk at your Hong Kong store?Yes, the FY-12 LCD Digital Thermometer Hygrometer is available for bulk purchase at Sun Cheong Computer Co. Ltd. (新昌電腦有限公司) in Sham Shui Po. Our physical store frequently supplies STEM educators and reptile breeders with reliable environmental monitoring components.

Target Users / Applications

Reptile Keepers: Monitoring the precise temperature and humidity gradients inside glass terrariums for geckos or bearded dragons.
Poultry Breeders: Flush-mounting the display on DIY egg incubators to ensure optimal hatching conditions without opening the lid.
Cigar Enthusiasts: Retrofitting wooden humidors with an accurate, low-profile digital hygrometer to preserve expensive cigar collections.