The ET-350 is a 3,5″ color TFT display, powered by USB. The 128 MB NAND Flash provides enough space for product details, logos, images and videos.
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| Operation | |
| CPU | CC2530-F128, 8051 core 8-bit MCU |
| O/S | proprietary |
| Software | proprietary |
| Clock frequency | 32 MHz |
| Display | |
| Type | e-paper display |
| Size | 4,4″, 400 x 300 (wxh) pixels |
| Mode | Black/White |
| Active area | 89.6 x 67.2 mm (wxh) |
| Contrast ratio | 10:1 |
| Pixel pitch | 113 dpi |
| Memory | |
| Internal ROM | 128 kB |
| Internal RAM | 8 kB |
| Communication | |
| Radio frequency | 2.4GHz (2405-2480 MHz) |
| Radio transmission speed | up to 250 kbps |
| Protocol | IEEE 802.15.4 based |
| No. of displays per base station | 500 |
| Power | |
| Voltage requirement | 3.0 V |
| Operating time | 3 years at room temperature (update frequency: 4 times per day, poll time 20 seconds) |
| Battery | 2x Alkaline AAA |
| Durability | |
| Temperature in operation | 10 to 50 °C / 50 to 122 °F |
| Temperature in storage | -20 to 60 °C / -4 to 140 °F |
| Humidity in operation | 20 – 85% (non-condensing) |
| Humidity in storage | 20 – 85% (non-condensing) |
| Physical | |
| Dimensions (mm / inch) | 106.52 x 90.86 x 18.20 mm / 4.19 x 3.58 x 0.72 in |
| Weight | Ca.104 g / 3.7 oz (incl. batteries) |
| Regulatory & Safety | |
| Product compliance | FCC, RoHS, EN60950-1, IEC 60950-1, EN 55022, EN 55024 |
