虽然家中剩下的贵重物品现都存放在银行里了，他还是安装了999电子报警器。 Although the family's remaining valuables are now lodged with the bank, he has installed an electronic999 dialling system.
火警报警器响个不停。 The fire-alarm kept jangling (away).
报警器正发出火警警报。 The fire-alarm is giving warning of fire.
