This complete body is an accessory of the range of control and signaling units, Harmony XB4, metal, diameter 22mm. It consists in a single contact block pre-assembled on a fixing collar unit. It features 2 NO slow break contact block and spring clamp connection type. Simply adding a head to this assembly will provide you with a complete ready-to-use push button. It weighs 62g. Thanks to its simplicity of installation, flexibility, and robustness, it meets the requirements of the majority of industrial applications