Digital Environmental Monitor | High-Precision HM20 Telemetry Node



Real-time Dual Sensing. Ultra-Compact LCD. The definitive hardware for surgical monitoring of temperature and humidity gradients in reptile habitats.



The Digital Environmental Monitor (HM20) is a mission-critical telemetry tool designed for the persistent tracking of atmospheric conditions.



Engineered with high-precision sensors, this digital node provides simultaneous temperature and humidity data with a rapid 10-second refresh rate.



Its wireless, low-profile design ensures a clean habitat aesthetic, eliminating cable clutter while providing the high-resolution data necessary to maintain the health of sensitive species like Bearded Dragons, Ball Pythons, and Axolotls.



Key Technical Benefits



High-Resolution Sensor Array: Delivers industrial-grade accuracy with a temperature tolerance of ±1°F and humidity precision of ±5%. This level of detail is vital for preventing respiratory infections and ensuring successful molting cycles.


Rapid Response Logic: Features a 10-second sampling interval, allowing handlers to react almost instantly to environmental fluctuations caused by heating element failures or misting system activations.


Minimalist Cable-Free Architecture: Specifically designed for a "Clean Setup" visual. The unit mounts directly to the interior glass or acrylic using high-adhesion double-sided tape, maintaining the professional look of your terrarium without messy external probes.


Enhanced LCD Readability: Utilizes a high-contrast 1.42" x 0.6" LCD interface, ensuring that environmental telemetry is legible even through high-transparency glass or from a distance.


Extended Energy Lifecycle: Powered by dual LR44 button cells, the unit is optimized for low power draw, providing a 6-month operational window before requiring battery maintenance.



Hardware Specifications



Model Number: HM20 Digital Series.


Sensor Type: Integrated Thermistor & Capacitive Hygrometer.


Temperature Accuracy: ±1°F.


Humidity Accuracy: ±5% RH.


Response Time: 10 Seconds.


Display: 1.42" x 0.6" Digital LCD.


Power Source: 2x LR44 Button Batteries (Included).


Mounting Logic: Integrated High-Adhesion Adhesive.



System Components & Packing List



1x HM20 Digital Telemetry Node.


2x LR44 Batteries (Pre-installed).


1x Industrial-Strength Double-Sided Adhesive.



Deployment & Maintenance Notes



Strategic Positioning: For the most accurate data, place the unit at the "median height" of the enclosure, away from direct contact with misting nozzles or the immediate center of a basking spot.


Battery Maintenance: When the LCD contrast begins to fade, replace both LR44 cells simultaneously to maintain sensor calibration and response speed.


Multi-Zone Monitoring: For professional setups, it is recommended to use two nodes—one in the "Warm Zone" and one in the "Cool Zone"—to verify the thermal gradient of the habitat.