{"product_id":"mars-hydro-controller-43-smart-environmental-controller","title":"Mars Hydro Controller 43 Smart Environmental Controller","description":"\u003cp\u003eThe Mars Hydro Controller 43 is a centralized environmental monitoring and lighting control system designed for indoor gardens, grow rooms, greenhouses, and other controlled horticultural environments. It combines real time temperature and humidity monitoring with programmable grow light control, VPD tracking, remote access through the MarsPro App, and optional PPFD and CO₂ sensing.\u003c\/p\u003e\n\u003cp\u003eCompatible Mars Hydro grow lights can be connected directly through RJ12 communication cables, allowing the Controller 43 to synchronize and manage up to 40 lights in series. Growers can adjust light intensity, create daily operating schedules, program sunrise and sunset transitions, and monitor environmental conditions from one interface.\u003c\/p\u003e\n\u003cp\u003eWhen equipped with the PAR and CO₂ sensors, the Controller 43 expands beyond basic climate monitoring to display PPFD and CO₂ concentration alongside temperature, humidity, and calculated VPD.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMonitors temperature, humidity, VPD, and optionally PPFD and CO₂\u003c\/li\u003e\n\u003cli\u003eControls up to 40 compatible grow lights via RJ12\u003c\/li\u003e\n\u003cli\u003eRemote monitoring and control through the MarsPro App\u003c\/li\u003e\n\u003cli\u003eProgrammable dimming, timers, and sunrise\/sunset transitions\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTemperature and Humidity Monitoring\u003c\/h3\u003e\n\u003cp\u003eThe included 3 in 1 sensor continuously monitors the growing environment and supplies temperature and humidity information directly to the Controller 43.\u003c\/p\u003e\n\u003cp\u003eThe controller supports a humidity monitoring range of approximately 5% to 95% RH with accuracy rated at ±3%. Temperature measurement extends from approximately 20°C below zero to 100°C, with a listed accuracy of approximately ±0.75°C.\u003c\/p\u003e\n\u003ch3\u003eVPD Monitoring\u003c\/h3\u003e\n\u003cp\u003eThe Controller 43 uses temperature and humidity data to calculate Vapor Pressure Deficit, or VPD. VPD provides a more useful picture of the relationship between air temperature and moisture than either temperature or humidity alone.\u003c\/p\u003e\n\u003cp\u003eDisplaying VPD alongside the primary environmental readings allows growers to monitor how changes in temperature or relative humidity are affecting the overall growing environment without manually calculating the value.\u003c\/p\u003e\n\u003ch3\u003eOptional PPFD Monitoring\u003c\/h3\u003e\n\u003cp\u003eAdding the PAR sensor allows the Controller 43 to measure PPFD directly within the growing area. Mars Hydro lists a PPFD measurement range of approximately 0 to 4,000 µmol\/m²\/s and a spectral response covering approximately 400 to 700 nm.\u003c\/p\u003e\n\u003cp\u003eThis allows growers to monitor actual light intensity at the plant canopy instead of relying only on dimmer percentages or manufacturer output specifications. The home screen is designed to display PPFD alongside temperature, humidity, and CO₂ when the appropriate sensors are connected.\u003c\/p\u003e\n\u003ch3\u003eOptional CO₂ Monitoring\u003c\/h3\u003e\n\u003cp\u003eThe optional CO₂ sensor expands the system into a more complete environmental monitoring platform. Mars Hydro lists a CO₂ measurement range of approximately 0 to 5,000 ppm, with sensor accuracy rated at approximately ±50 ppm plus 5% of the reading.\u003c\/p\u003e\n\u003cp\u003eCO₂ information is displayed directly on the Controller 43 and can also be accessed through the MarsPro App, providing a convenient way to view concentration alongside light intensity, temperature, humidity, and VPD.\u003c\/p\u003e\n\u003ch3\u003eControl Up to 40 Grow Lights\u003c\/h3\u003e\n\u003cp\u003eThe Controller 43 can synchronize as many as 40 compatible grow lights in series. Lights connect through the controller's RJ12 system, allowing a group of fixtures to operate from common schedules and dimming settings rather than requiring each light to be adjusted individually.\u003c\/p\u003e\n\u003cp\u003eThis makes the Controller 43 suitable for both individual grow tents and larger rooms using multiple compatible fixtures.\u003c\/p\u003e\n\u003ch3\u003eWorks With Bluetooth and Non Bluetooth Lights\u003c\/h3\u003e\n\u003cp\u003eCompatible Mars Hydro lighting does not necessarily need built in Bluetooth to use the Controller 43. Grow lights can be connected through the controller and compatible dimming hardware using RJ12 communication cables.\u003c\/p\u003e\n\u003cp\u003eOnce connected, lighting intensity and scheduling can be managed through the physical controller or MarsPro App.\u003c\/p\u003e\n\u003ch3\u003eProgrammable Light Dimming\u003c\/h3\u003e\n\u003cp\u003eThe Controller 43 provides centralized adjustment of compatible LED grow light output. Instead of manually turning dimmer knobs on individual fixtures, growers can set lighting intensity directly through the controller.\u003c\/p\u003e\n\u003cp\u003eThis allows intensity to be changed as plants progress through propagation, vegetative growth, flowering, or other stages with different light requirements.\u003c\/p\u003e\n\u003ch3\u003eSunrise and Sunset Simulation\u003c\/h3\u003e\n\u003cp\u003eLighting schedules can include gradual sunrise and sunset transitions. Rather than switching immediately from off to full intensity, the controller can progressively increase output at the beginning of the programmed photoperiod and reduce output before lights turn off.\u003c\/p\u003e\n\u003cp\u003eThis provides smoother daily transitions while also automating a task that would otherwise require manual dimming.\u003c\/p\u003e\n\u003ch3\u003eAutomatic Light Protection\u003c\/h3\u003e\n\u003cp\u003eThe Controller 43 includes automated temperature based lighting protection. When configured, the controller can reduce lighting output automatically if the temperature reaches a preset threshold, and an automatic shutoff function can also turn lights off when the selected temperature limit is exceeded.\u003c\/p\u003e\n\u003cp\u003eThis gives growers another layer of protection against excessive heat conditions when using compatible connected lights.\u003c\/p\u003e\n\u003ch3\u003eEnvironmental Alerts\u003c\/h3\u003e\n\u003cp\u003eUsers can configure warning thresholds for key environmental readings, including temperature, humidity, CO₂, and PPFD.\u003c\/p\u003e\n\u003cp\u003eWhen monitored conditions move outside the selected range, the Controller 43 can identify the abnormal condition so the grower can respond before environmental stress becomes more significant.\u003c\/p\u003e\n\u003ch3\u003eMarsPro App Remote Control\u003c\/h3\u003e\n\u003cp\u003eConnecting the Controller 43 to the MarsPro App adds remote monitoring and control. Through the app, users can access environmental information and manage compatible connected equipment without standing directly in front of the controller.\u003c\/p\u003e\n\u003cp\u003eThe app supports setup on both Android and iOS devices and shows remote access to temperature, humidity, VPD, CO₂, PPFD, dimming, and timing functions.\u003c\/p\u003e\n\u003ch3\u003eiHub 4AC Integration\u003c\/h3\u003e\n\u003cp\u003eThe Controller 43 can also work with the optional Mars Hydro iHub 4AC power strip. With the iHub connected, the system can control compatible supplemental UV, IR, red, and blue lighting bars, including on\/off control, multi timing schedules, cycle timing, UV timing, and IR timing.\u003c\/p\u003e\n\u003cp\u003eThe iHub 4AC is sold separately.\u003c\/p\u003e\n\u003ch3\u003eMulti Timing and Cycle Timing\u003c\/h3\u003e\n\u003cp\u003eMulti timing allows several activation periods to be programmed within the same day, useful for equipment that should operate during specific portions of the photoperiod rather than continuously.\u003c\/p\u003e\n\u003cp\u003eCycle timing repeatedly switches a connected output on and off according to a selected schedule. Instead of specifying only one daily start and stop time, users can define an activation duration and recurring cycle — useful for supplemental light bars or other compatible controlled devices that need intermittent operation.\u003c\/p\u003e\n\u003ch3\u003eCompact Controller Design\u003c\/h3\u003e\n\u003cp\u003eThe Controller 43 measures approximately 6.22\" x 4.25\" x 1.45\", making it compact enough for mounting inside or near a grow space without occupying significant wall area. An installation rail is supplied for mounting.\u003c\/p\u003e\n\u003cp\u003eThe controller operates from a 12V DC power supply and consumes approximately 4W.\u003c\/p\u003e\n\u003ch3\u003eLocal Controls\u003c\/h3\u003e\n\u003cp\u003eThe physical Controller 43 includes its own screen and directional buttons, allowing major functions to be accessed without relying exclusively on a smartphone. Controls provide navigation for device status, light groups, iHub groups, environmental settings, alarm information, and system settings.\u003c\/p\u003e\n\u003cp\u003eThis keeps essential control available locally even when users prefer not to manage the system through the app.\u003c\/p\u003e\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cp\u003eThe exact package depends on the selected configuration.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eStandard Controller Package:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMars Hydro Controller 43\u003c\/li\u003e\n\u003cli\u003eTemperature, Humidity and Light 3 in 1 Sensor\u003c\/li\u003e\n\u003cli\u003eInstallation rail\u003c\/li\u003e\n\u003cli\u003eRJ12 communication cable\u003c\/li\u003e\n\u003cli\u003ePower supply\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eController With PAR and CO₂ Sensors:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eMars Hydro Controller 43\u003c\/li\u003e\n\u003cli\u003eTemperature, Humidity and Light 3 in 1 Sensor\u003c\/li\u003e\n\u003cli\u003ePAR Sensor\u003c\/li\u003e\n\u003cli\u003eCO₂ Sensor\u003c\/li\u003e\n\u003cli\u003ePPFD Adapter\u003c\/li\u003e\n\u003cli\u003eRJ12 T Shape Splitter\u003c\/li\u003e\n\u003cli\u003e3 x 3m RJ12 Cables\u003c\/li\u003e\n\u003cli\u003eInstallation rail\u003c\/li\u003e\n\u003cli\u003ePower supply\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eMars Hydro\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eController 43\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eController Type\u003c\/td\u003e\n\u003ctd\u003eSmart environmental and lighting controller\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput Voltage\u003c\/td\u003e\n\u003ctd\u003e12V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003eApprox. 4W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMaximum Light Control\u003c\/td\u003e\n\u003ctd\u003eUp to 40 compatible fixtures\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication\u003c\/td\u003e\n\u003ctd\u003eRJ12\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApp\u003c\/td\u003e\n\u003ctd\u003eMarsPro\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Monitoring\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHumidity Monitoring\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVPD Monitoring\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePPFD Monitoring\u003c\/td\u003e\n\u003ctd\u003eWith PAR sensor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCO₂ Monitoring\u003c\/td\u003e\n\u003ctd\u003eWith CO₂ sensor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHumidity Range\u003c\/td\u003e\n\u003ctd\u003e5% to 95% RH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHumidity Accuracy\u003c\/td\u003e\n\u003ctd\u003e±3%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Range\u003c\/td\u003e\n\u003ctd\u003e-20°C to 100°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTemperature Accuracy\u003c\/td\u003e\n\u003ctd\u003e±0.75°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCO₂ Range\u003c\/td\u003e\n\u003ctd\u003e0 to 5,000 ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCO₂ Accuracy\u003c\/td\u003e\n\u003ctd\u003e±50 ppm + 5%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePPFD Range\u003c\/td\u003e\n\u003ctd\u003e0 to 4,000 µmol\/m²\/s\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePPFD Spectral Response\u003c\/td\u003e\n\u003ctd\u003e400 to 700 nm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLight Dimming\u003c\/td\u003e\n\u003ctd\u003eProgrammable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLight Scheduling\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSunrise \/ Sunset\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnvironmental Alerts\u003c\/td\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eiHub 4AC Compatibility\u003c\/td\u003e\n\u003ctd\u003eYes, sold separately\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e6.22\" x 4.25\" x 1.45\"\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Cable Length\u003c\/td\u003e\n\u003ctd\u003e1.5 m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Environment\u003c\/td\u003e\n\u003ctd\u003eIndoor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWaterproof Rating\u003c\/td\u003e\n\u003ctd\u003eNot IP65\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated Lifespan\u003c\/td\u003e\n\u003ctd\u003e50,000 hours\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e1 Year\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e","brand":"Mars Hydro","offers":[{"title":"No","offer_id":50153019965690,"sku":"MH-CTRL43","price":49.99,"currency_code":"USD","in_stock":true},{"title":"Add PAR and CO2 Sensor (+$18.00)","offer_id":50153019998458,"sku":"MH-CTRL43-PARCO2","price":67.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0847\/7487\/9482\/files\/400c2ebd-3b4f-43de-b16c-0f549e60c4b7.png?v=1787510902","url":"https:\/\/cultivasupply.com\/products\/mars-hydro-controller-43-smart-environmental-controller","provider":"Cultiva Supply","version":"1.0","type":"link"}