功能概述1. LCD显示2. 外形尺寸78*70*24mm3. LCD尺寸:27*52mm4．重量：55g（不含电池）5. 正倒计时6. 计时精准度1秒。7. 计时范围：1S至100MIN8. 按键有按键音9. 倒计时结束是有响闹铃，响闹32秒-58℉～158℉) 后结束，若响闹中按键，则响闹中止二.电池的安装翻转到本产品背面，推开电池盖，放一块AAA的电池到电池槽中三.按钮及操作1. 按键MIN：加一分钟2. 按键SEC：加一秒钟3. 按键START/STOP：开始/停止计时4．按键MIN SEC：复位归零 具体操作：设定完需要倒计的时间后，按START/STOP键开始倒计时。倒计时到00分00秒时，闹钟响闹32秒，正在响闹时按任意键停止响闹，并显示上次的设定的倒计时时间 RESET后显示为00分00秒时，按START/STOP键开始正计时。正计时状态下，按住MIN键或SEC键分钟或秒钟加一，按住不放快速加，若之后按START/STOP键则开始倒计时四．包装资料：外箱尺寸49*30.5*18cm；一箱90个；净重5.95kg；毛重8kg 。Measuring Temperature Range: -50°C～70°C (-58°F～ 158°F)。Temperature Accuracy: ±1°C (±2°F)。Selectable °C or °F Display。Temperature Display Resolution: 0.1°C (0.2°F)。Measuring Humidity Range: 10%Rh ～ 99%Rh 。Humidity Accuracy: ±5% 。Humidity Display Resolution: 1% 。Max/Min Temperature and Humidity Records 。Operating Voltage: 1.5V, one battery size AAA 。Indoor Relative Humidity Comfort Level Indicator 。Sampling period：10SBattery Installation。Lift the stand at the back of the unit; 。Slide and open the battery cover as indicated by the arrow; 。Insert 1 AAA battery into the battery housing (note the polarity); 。Close the battery cover.Buttons Operations 1. MIN/MAX Button 。Press MIN/MAX key will display the minimum indoor temperature and minimum indoor humidity. 。Press MIN/MAX key again will display the maximum indoor temperature and maximum indoor humidity. 2. CLEAR Button 。Press CLEAR key will clear the indoor temperature humidity memory. 。Comfort indicators will display the level as comfortable, wet or dry. The table is shown below.