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Ⅰ Technical parameters -- 12-key answer sheet with screen
Name: 12-key screen answer sheet ZJA-12
● Product features
The 12-key screen answer card ZJA-12 is a kind of answer label developed and produced for intelligent classroom interaction. The label has a display screen, which is generally used for the application of smart campus programs such as students' attendance, on-campus consumption, personnel indoor positioning, class check-in, and classroom answer interaction.
· Label type: two-way communication function
· Security: anti-cracking encryption processing, label active sending
· Stability: fast speed, strong sensitivity, long reading distance
· Customization: Low frequency 125K, high frequency IC, number of keys and functions can be customized
● Specifications
| Tag type | Operating voltage | Battery specification | Battery useful life | Impact capacity | Reception sensitivity |
| With two-way communication function | 3V | Cr2032×2 | 1〜2 years | >200PCS | -80dBm〜-90dBm |
| Emission time | Operating method | 2.4G recognition distance | Custom 125k activation distance | 定制高频Custom high frequency IC | |
| Actively once per second/passively 3-4 times per second | Active | 0-100 meters | 1-3 meters | 13.56MHz | |
Ⅱ Product display -- 12-key answer sheet with screen
Real-shot display
