{"id":6550,"date":"2026-10-08T16:50:08","date_gmt":"2026-10-08T16:50:08","guid":{"rendered":"https:\/\/plugplaykit.com\/?post_type=product&p=6550"},"modified":"2026-10-14T10:08:43","modified_gmt":"2026-10-14T10:08:43","slug":"non-contact-liquid-level-alarm-kit","status":"publish","type":"product","link":"https:\/\/plugplaykit.com\/es\/producto\/non-contact-liquid-level-alarm-kit\/","title":{"rendered":"Non-Contact Liquid Level Alarm Kit"},"content":{"rendered":"

Non-Contact Liquid Level Detection<\/h2>\n

The liquid level alarm kit consists of three main components: a power supply, an alarm unit, and a liquid level sensor.<\/p>\n

Using advanced signal processing technology, the sensor detects liquid through non-metallic container walls without direct contact with the liquid or the need to drill holes.<\/p>\n

It supports a variety of non-metallic container materials, including plastic, glass, and ceramic, and can be used on flat, curved, and cylindrical surfaces, depending on the probe model.<\/p>\n

Important: The liquid must be electrically conductive, and the container wall must be non-metallic.<\/p>\n

Signal Output Options<\/h2>\n
\n\n\n\n\n\n
Output Type<\/th>\nDescription<\/th>\nApplication<\/th>\n<\/tr>\n
V \u2013 High\/Low Level Output<\/td>\nProvides a high\/low logic-level signal for MCU or microcontroller GPIO inputs. Cannot directly drive PLC inputs or relay coils.<\/td>\nDIY electronics, microcontroller projects, and signal monitoring<\/td>\n<\/tr>\n
NPN \u2013 Active-Low Output<\/td>\nNormally open (NO): outputs a low-level signal when liquid is detected; the output is open when no liquid is detected.<\/td>\nLiquid detection and external control circuits<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Probe Model Comparison<\/h3>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Specifications<\/th>\nY25<\/th>\nY26S<\/th>\nY26A<\/th>\nY29A<\/th>\n<\/tr>\n
Recommended Application<\/td>\nFlat container walls<\/td>\nTubing \u226512 mm<\/td>\nSmall tubing, 5\u201310 mm OD<\/td>\nFlat container walls<\/td>\n<\/tr>\n
Container Wall Thickness<\/td>\n\u226420 mm<\/td>\n\u2014<\/td>\n\u2014<\/td>\n\u226410 mm<\/td>\n<\/tr>\n
Compatible Tube Diameter<\/td>\n\u2014<\/td>\n\u226512 mm<\/td>\n5\u201310 mm OD<\/td>\n\u2014<\/td>\n<\/tr>\n
Level Detection Accuracy<\/td>\n\u00b11.5 mm<\/td>\n\u00b11.5 mm<\/td>\n\u00b11.5 mm<\/td>\n\u00b13 mm<\/td>\n<\/tr>\n
Response Time<\/td>\n500 ms<\/td>\n500 ms<\/td>\n500 ms<\/td>\n100 ms<\/td>\n<\/tr>\n
Output Type<\/td>\nNPN \/ V<\/td>\nNPN \/ V<\/td>\nNPN \/ V<\/td>\nNPN \/ V<\/td>\n<\/tr>\n
Cable Length<\/td>\n1 m (\u00b110 mm)<\/td>\n1 m (\u00b110 mm)<\/td>\n1 m (\u00b110 mm)<\/td>\n1 m (\u00b110 mm)<\/td>\n<\/tr>\n
Waterproof Rating<\/td>\nIP67<\/td>\nIP67<\/td>\nIP67<\/td>\nIP67<\/td>\n<\/tr>\n
Operating Temperature<\/td>\n\u221220\u00b0C to +105\u00b0C<\/td>\n\u221220\u00b0C to +105\u00b0C<\/td>\n\u221220\u00b0C to +105\u00b0C<\/td>\n\u221220\u00b0C to +105\u00b0C<\/td>\n<\/tr>\n
Housing Material<\/td>\nFlame-Retardant PC-V0<\/td>\nFlame-Retardant PC-V0<\/td>\nFlame-Retardant PC-V0<\/td>\nFlame-Retardant PC-V0<\/td>\n<\/tr>\n
Environmental Compliance<\/td>\nRoHS 2.0<\/td>\nRoHS 2.0<\/td>\nRoHS 2.0<\/td>\nRoHS 2.0<\/td>\n<\/tr>\n
Safety Certification (Supplier-Listed)<\/td>\nCE<\/td>\nCE<\/td>\nCE<\/td>\nCE<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Notes: Tube diameter refers to the outside diameter (OD). Cable lengths can be customized for bulk orders.<\/p>\n

Choose when the alarm sounds<\/h2>\n
    \n
  • High-level warning: choose the full-level alarm kit. It is intended to warn when liquid reaches the sensor position. Mount at the desired upper warning point, allowing an appropriate margin below overflow.<\/li>\n
  • Low-level warning: choose the low-level alarm kit. It is intended to warn when liquid falls below the sensor position. Mount at the desired refill warning point.<\/li>\n<\/ul>\n

    These are separate purchase configurations. A user-selectable mode switch, automatic pump control and automatic shutoff are not specified. NPN and V describe the probe output interface; they do not universally mean high-level and low-level alarm.<\/p>\n

    Compare the eight kit options<\/h2>\n\n\n\n\n\n\n\n\n\n\n\n\n
    Current option<\/th>\nApplication and alarm<\/th>\nProbe DC supply shown in supplier option<\/th>\n<\/tr>\n<\/thead>\n
    Y25-NPN \/ Full-level alarm<\/td>\nY25 \u00b7 Flat tank \u00b7 High-level alarm<\/td>\n5\u201312 V DC<\/td>\n<\/tr>\n
    Y25-V \/ Low-level alarm<\/td>\nY25 \u00b7 Flat tank \u00b7 Low-level alarm<\/td>\n5\u201324 V DC<\/td>\n<\/tr>\n
    Y26S-NPN \/ Full-level alarm<\/td>\nY26S \u00b7 Curved wall \/ tube \u00b7 High-level alarm<\/td>\n5\u201312 V DC<\/td>\n<\/tr>\n
    Y26S-V \/ Low-level alarm<\/td>\nY26S \u00b7 Curved wall \/ tube \u00b7 Low-level alarm<\/td>\n5\u201324 V DC<\/td>\n<\/tr>\n
    Y26A-NPN \/ Full-level alarm<\/td>\nY26A \u00b7 5\u201310 mm OD tube \u00b7 High-level alarm<\/td>\n5\u201312 V DC<\/td>\n<\/tr>\n
    Y26A-V \/ Low-level alarm<\/td>\nY26A \u00b7 5\u201310 mm OD tube \u00b7 Low-level alarm<\/td>\n5\u201324 V DC<\/td>\n<\/tr>\n
    Y29A-NPN \/ Full-level alarm<\/td>\nY29A \u00b7 Flat tank \/ residue \u00b7 High-level alarm<\/td>\n12\u201324 V DC<\/td>\n<\/tr>\n
    Y29A-V \/ Low-level alarm<\/td>\nY29A \u00b7 Flat tank \/ residue \u00b7 Low-level alarm<\/td>\n12\u201324 V DC<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

    Package contents<\/h2>\n
      \n
    • One BJ12 alarm in the selected warning configuration<\/li>\n
    • One selected probe with 1 m cable<\/li>\n
    • One Chinese-standard power adapter<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"

      The Non-Contact Liquid Level Alarm Kit<\/strong> detects liquid levels through non-metallic container walls without drilling or direct contact with the liquid. Designed for conductive liquids, it supports multiple probe options for flat containers and tubing, making it ideal for water tank monitoring, liquid level alerts, and DIY automation projects.<\/p>","protected":false},"featured_media":6546,"comment_status":"open","ping_status":"closed","template":"","meta":{"_seopress_titles_title":"Non-Contact Liquid Level Alarm Kit | PlugPlayKit","_seopress_titles_desc":"Non-contact liquid level alarm kit for conductive liquids. Detects liquid through non-metallic container walls without drilling. 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