TLZ3T v.2 - LED Display for Swimming Pool - Clock + 3 Temperatures  
Characteristic of LED Display:
  • Clock - four digits
  • Configurable display date
  • Three temperature displays
  • Height of digits 10 cm
  • Radio remote control
  • Automatic light adjustment
  • Frame made of HPL
  • Red plexiglas filer
  • Supply 230V AC (max 100VA)
  • Protection IP44, class II
  • Work temperature 0° C - 40° C
  • Dimensions 100x70x7cm
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Price USD: 1099.00 $ + Tax  
Schematic Manual

LED display TLZ3T is designated to be use in swimming-pool. The display shows current time (hours, minutes) and three temperatures freely configurable e.g. air temperature, internal room temperature, temperature of water or constant temperatures set by remote control. To display values was applied super light 7 segments displays 4.0 (101.6mm) with common anode. Clock was built on specialized chip Maxim-Dallas DS1307 with I2C interface and battery backup. Instead of battery was used high volume capacitor. Digital thermometer with interface 1-wire DS1820B and resolution 0.1° C measure appropriate temperature. The whole display is controlled by microcontroller ATMega8, which communicated via RS485 interface with each small board which managed 7-segment displays. Every digit display has got independent impulse supply circuit, what allowed to automatic adjustment of light intensity depend on data from main controller, which measure external light and adjust level of LED lighting. Plexiglas filter excellent guarantee perfect contrast. Setting time and temperature is carried out by four buttons remote control cooperative with Micro Link RX-6 module. The communication is protected by KeeLoq coding. Work frequency is 433,92 MHz and range 100m.