Description: The HMT LED 20 is an outdoor
clock featuring high brightness LEDs with a digit height of 20 cm, providing optimal visibility up to 90 meters with a 160° viewing angle. Available LED colors include red, white, or yellow. The clock can be set using a control pad or a wireless remote control operating at 433.92 MHz. Optional synchronization methods include Minute impulse, DCF, or GPS antenna for absolute time accuracy, and time distribution options such as AFNOR, DHF, NTP, or PC. It is available in single or double-sided displays.
General Features:
The clock automatically adjusts luminosity based on environmental conditions (sun, cloud, or night) and alternation duration between 2 to 6 seconds. It can display time, date, temperature, and rates of chlorine and humidity, either fixed or alternating. Time can be displayed in 12 or 24-hour formats with automatic summer/winter changeover. Temperature is displayed in Celsius or Fahrenheit, with a range from -99° to +99.9° and a resolution of 0.1°C. The clock includes a display test menu and allows offset adjustment from -9.9° to +9.9°. An optional 869 MHz HF temperature feature allows communication up to 50 meters through walls, transmitting data every 15 seconds.
Mechanical Features:
The clock is constructed with a black aluminum casing, featuring antiglare protection glass, and is rated IP 54 and IK 07. It operates in temperatures from -20°C to +50°C and can withstand humidity levels of 93% at 40°C. The electronic cards are tropicalized, and the clock can be wall-mounted or installed with an optional bracket. The weight is 8.5 kg for single-sided and 22 kg for double-sided displays.
Electrical Features:
The power supply is 115/230VAC 50/60HZ, with a rated current of 0.37A to 115VAC and 0.2A to 230VAC for single-sided, and 0.55A to 115VAC and 0.30A to 230VAC for double-sided displays with a repeater.
Synchronization Options:
Various synchronization cards are available, including AFNOR/IMPULSE, DHF receiver for HF temperature and DHF time, PC/ASCII for data display, and NTP synchronization.
References:
The document lists several product references for the HMT LED 20, including wireless remote control, temperature probes, and synchronization cable kits. The color of the LED is indicated by adding a letter to the reference number: R for red, J for yellow, and W for white.
Mounting Options:
The clock can be mounted on a wall or hung from a ceiling or wall using a hanging bracket.