{"id":4316,"date":"2026-10-15T08:13:33","date_gmt":"2026-10-15T08:13:33","guid":{"rendered":"https:\/\/acrel.pl\/?post_type=product&p=4316"},"modified":"2026-10-15T08:13:41","modified_gmt":"2026-10-15T08:13:41","slug":"whd20r-22-temperature-humidity-controller","status":"publish","type":"product","link":"https:\/\/acrel.pl\/ru\/product\/whd20r-22-temperature-humidity-controller\/","title":{"rendered":"WHD20R-22 Temperature & Humidity Controller"},"content":{"rendered":"\n

General<\/strong><\/h2>\n\n\n\n

WHD series smart temperature and humidity controller is suitable for adjustment and control of temperature and humidity in equipments of high voltage switchgear, terminal box, ring network panel, box transformer substation etc. It can effectively protect relevant equipment from faults resulting from excessive low or high temperature, creepage or flashover etc.from humidity or condensation.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Specification<\/strong><\/h2>\n\n\n\n
Technical Parameter<\/strong><\/td>WHD48<\/strong><\/td>WHD72<\/strong><\/td>WHD46<\/strong><\/td>WHD20R<\/strong><\/td><\/tr>
Measuring range<\/td>Temperature<\/td>-40\u2103~99.9\u2103<\/td><\/tr>
Humidity<\/td>20%RH~90%RH<\/td><\/tr>
Accuracy<\/td>Temperature<\/td>\u00b11\u2103<\/td><\/tr>
Humidity<\/td>\u00b15%RH<\/td><\/tr>
Set range of controling parameters<\/td>Heating for temperature rising<\/td>-40\u2103~40\u2103<\/td><\/tr>
Blowing for temperature decreasing<\/td>0\u2103~99.9\u2103<\/td><\/tr>
Humidity<\/td>20%RH~90%RH<\/td><\/tr>
Optional function<\/td>Communication<\/td>RS485 Modbus-RTU<\/td><\/tr>
Analog output<\/td>No<\/td>DC4-20mA<\/td>No<\/td><\/tr>
Alarm<\/td>No<\/td>1 alarm output<\/td><\/tr>
Auxiliary power supply<\/td>AC85~265V, DC100~350V<\/td><\/tr>
Insulation resistance<\/td>\u2265100M\u03a9<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Front Panel<\/strong><\/h2>\n\n\n\n
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Wiring<\/strong><\/h2>\n\n\n\n
\"\"<\/figure>\n\n\n\n

Dimension<\/strong><\/h2>\n\n\n\n
\"\"<\/figure>\n\n\n\n
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Typical Connection<\/strong><\/h2>\n\n\n\n
\"\"<\/figure>\n","protected":false},"excerpt":{"rendered":"\u25cf Two channels temperature & humidity (with sensor)\n\u25cf Measuring temperature range: -40~+99\u2103\n\u25cf Measuring humidity range: 20%RH~90%RH\n\u25cf Display: LED display\n\u25cf Optional function: 1 channel alarm output\n\u25cf Optional function: RS485 (Modbus-RTU) communication\n\u25cf Temperature and humidity measuring & controlling\n\u25cf Din Rail Mounted","protected":false},"featured_media":4317,"template":"","productcat":[6,39],"class_list":["post-4316","product","type-product","status-publish","has-post-thumbnail","hentry","productcat-power-protection","productcat-wireless-humidity-measurement"],"yoast_head":"\nWHD20R-22 Temperature & Humidity Controller - ACREL<\/title>\n<meta name=\"description\" content=\"WHD series smart temperature and humidity controller is suitable for adjustment and control of temperature and humidity in equipments of high voltage switchgear, terminal box, ring network panel, box transformer substation etc. It can effectively protect relevant equipment from faults resulting from excessive low or high temperature, creepage or flashover etc.from humidity or condensation.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/acrel.pl\/ru\/product\/whd20r-22-temperature-humidity-controller\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"WHD20R-22 Temperature & Humidity Controller - 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