说明：  用可调电阻调节电压值作为模拟温度的输入量，当温度低于30℃时，发出长嘀报警声和光报警，当温度高于60℃时，发出短嘀报警声和光报警。
(Adjustable resistance for adjusting the voltage values as input analog temperature, when the temperature was below 30 ℃, a long beep alarm sound and light alarm, when the temperature is higher than 60 ℃, a short beep alarm sound and light alarm. )