| 发射机 | Transmitter |
| 尺寸：132 x 55 x 40 毫米 | Dimension: 132 x 55 x 40 mm |
| 重量：175 克（不含电池） | Weight: 175 g (w/o batteries) |
| 电源：2节AA电池，碱性/可充电 | Power: 2 AA batteries, Alkaline / rechargable acceptable |
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| 接收器 | Receiver |
| 尺寸：190 x 85 x 62 毫米 | Dimension: 190 x 85 x 62 mm |
| 重量：950 克（含电缆） | Weight: 950 g (w/ wire cable) |
| 电源：24/48、48/110、110/220、220/380 VAC / 12~24 VDC | Power supply: 24/48, 48/110, 110/220, 220/380 VAC / 12~24 VDC |
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| F21-E2，单速按钮通过PC程序用作双速按钮。支持电子卡 在发射器损坏的情况下，可以轻松地将系统从一个系统更换到另一个系统。取出电子卡并插入新系统，即可立即恢复工作。 | The compact, ergonomically designed transmitters for easy carrying.F21-E2, a single speed button works as double speed button through PC program.e-Card supported.Easy swapping the system from one to another in case of transmitter damage. Remove the e-card and plug into new system for resuming to work immediately. |
| 变送器按钮：1 个 EMS 按钮 / 1 个旋转钥匙开关 8 个单步按钮（UP/DOWN 按钮可通过软件编程为双倍速度） | Transmitter pushbutton: 1 EMS button / 1 Rotary Key Switch 8 single step button (UP/DOWN buttons are programmable as double speed through software) |
| 发射器电源：两节 1.5 伏（AA 尺寸）碱性/可充电电池 | Transmitter power supply: Two 1.5 volts (AA Size) alkaline/ rechargeable batteries |
| 提供超过 43 亿个唯一 ID 代码（永不重复） | Over 4.3 billions unique ID code available (never repeated) |
| 工作温度范围 -40°C 至 +85°C | Operating temperature range -40°C to +85°C |
| CRC 和汉明技术：增强的编码/解码。 | CRC & Hamming Technology: enhanced encoding/decoding. |
| 用于发射器和接收器的内部天线 | Internal antenna for both transmitter & receiver |
| PLL电路：多通道选择，无干扰。 | PLL Circuit: multi-channel selection, interference free. |
| 符合人体工程学的发射器：紧凑而方便。 | Ergonomic transmitter: compact & handy. |
| 可编程：计算机软件可编程。单步按钮可用作双步按钮。 | Programmable: Computer software programmable. A single step pushbutton works as double step pushbutton. |
| 功能设置软件 | Function Setting Software |
| 为了满足各种应用需求，F21-E2软件提供了多功能设置，如正常（瞬时）、切换、磁性、开/关和联锁/非联锁模式下的按钮。 | To meet variety application requirements, F21-E2 software provides multi-function setting such as pushbutton in Normal(Momentary), Toggle, Magnetic, ON/OFF, and Interlock/Non-interlock modes. |
| 特点：电子贺卡设计 | Special characteristic: e-Card design |
| USB接口 | USB interface |
| 即插即用，就像 SIM 卡一样 | Plug & Play, just like SIM card |
| 通过发射器复制电子贺卡 | e-Card duplicate via transmitter |