As it is possible, it does not need, detecting the fluid leak and the like securely with simple configuration, to inform about the current supply from outside outside, offer of the liquid detection device whose installation of the configuration component and exchange job relatively is simple. Connector 17, the electrode includes with the 2nd connector 19B which possesses 2nd connector terminal 48of a the pair which of 1st connector 19A and the information equipment 18 which possess 1st connector terminal 41of a the pair which the electrode of water electric battery 21 is jointed and 41b is jointed and 48b. 1st connector 19A and 2nd connector 19B are concatenated, installation and removal mutually possibly, at the same time 1st connector terminal 41a and 41b and 2nd connector terminal 48,48a and 48b are jointed electrically.外部からの電源供給を必要とせず、簡易な構成により確実に液漏れなどを検知して外部に知らせることができるとともに、構成部材の取り付け、交換作業が比較的に簡易である液体検知装置の提供。コネクタ17は、水電池21の電極と接続された一対の第1コネクタ端子41a,41bを有する第1コネクタ19Aと、報知機器18の電極と接続された一対の第2コネクタ端子48a,48bを有する第2コネクタ19Bとを含む。第1コネクタ19Aと第2コネクタ19Bとが、互いに着脱可能に連結され、かつ第1コネクタ端子41a,41bと第2コネクタ端子48,48a,48bとが電気的に接続される。
