Window and split-air conditioning models (A1 and A2 series)
The A1-series controllersare designed for window air conditioners, while the A2-series controllers are tailored for split-type domestic models. We also provide OEM-specific custom-built models with specialized features, in addition to our standard models that already include all essential functionalities. We have special models with heat pumping facility as well. All these cost-effective controllers are developed using mixed-signal processing technology, with careful consideration of EMC/EMI compliance, reliability, safety, convenience, and energy efficiency. As a result, they deliver superior performance and significant operational cost savings. Request to consult the specific product selection and select a particular controller that suits the most.
Package and ductable controllers (A3 series) - PS-AX-XXX
The A3-series of controllers are designed for air conditioning in direct or ductable cooling applications, whereas the A4-series controllers are intended for chilled water generation used in cooling systems. Both series are equipped with a provision for one blower or pump and can operate with one to six compressors.
They incorporate a loading and unloading feature that adjusts operation according to load demand, thereby saving energy and reducing operational costs. These controllers also include intelligent sequencing to ensure uniform wear and tear, as well as stand-by and normal operation modes with a provision to switch ON the standby unit, if the operating system fails. The blower motor / pump can be operated either directly, with a VFD, or in a star-delta configuration. Safety is enhanced through common error input protections such as single phasing and blower or pump failure, along with individual protection for each compressor circuit. These cost-effective controllers that operates from 90 to 270 volts power supply are developed using mixed-signal processing technology, with careful consideration of EMC/EMI compliance, reliability, safety & convenience, and energy efficiency. In addition, we manufacture complete control panels that integrate the electronic controller, protection devices, properly rated contactors, and electrical terminations in an enclosure. As a result, they deliver superior performance and significant operational cost savings. Request to consult the specific product selection and select a particular controller that suits the most.
Air Conditioning Controller with Free Cooling - A5-G323-01
The A5-G323-01 controller is a highly reliable, field-proven unit designed for 24/7 operation with battery backup and EMC/EMI compliance, offering Normal, Free, and Emergency cooling modes to utilize air conditioners, ambient air enthalpy, or a combination of both, thereby ensuring energy-efficient cooling and significant cost savings in unmanned cellular sites, shelter guard rooms, communication huts, and similar applications. This saves considerable energy and operational cost in these site operations by using free Energy available of the ambient during many hours of the day/month. The many features of this field proven controllers could be found in our particular product pamphlet given in the product manual.
Cyclic Timer - PS-AT-02-Series
The PS-AT-02-Series of timers are designed to operate two numbers of Air conditioners alternately as per the selected time interval of 1 to 12 Hrs. It is provided with test and run modes to verify the operation time. Fire error protection port is used to shut down the air-conditioners in the event of getting fire alarm. Our model PS-AT-02-S-A-20-PWX is intended two single-phase loads while the PS-AT-02-X-B-XX-XXX is for switching three-phase loads. These models come with automatic and automatic & manual operation. These are available in metal or waterproof enclosures. It is requested to refer the product selection chart for more details.
Dimmers with illumination Scene Setting - PS-DR-08-XX
The purpose of a dimmer is to adjust lighting levels to match the required illumination. These dimmers can be used either individually or in combination, through RS-485 communication ports connected to the dimmers and button panels. The button panels, as commonly referred to, can be configured to create pre-defined illumination scenes for any area by combining different dimmer settings. Such scene-setting functionality is particularly useful for presentations, lectures, functions, and similar events where specific lighting moods are required. The appropriate model can be selected by browsing our catalogue or by consulting us directly.
Dual Set Thermostat for FCU/DX systems - PS- DT-01-FW/ PS-DT-01-FD/PS-DT-02-FD
The Dual-set thermostat models PS-DT-01/02are designed for Air Handling Units (AHUs) using water for cooling or heating, with model PS-DT-01-FW suited for FCU water applications, PS-DT-01-FD for direct expansion (DX) systems, and PS-DT-02-FD for heat/cool functions with DX systems. System could be set to operate for Cool, Dry, Fan, Heat operation between 16–30°C (62–86°F) when occupied and 22–30°C (72–86°F) when un-occupied by using an occupancy sensor interface, making it ideal for hotel rooms and similar applications. This provision saves Energy and reduces operational costs. Setting of the same could be achieved with a two-module size control box or with IR remote. More product details are given in the particular product Boucher.
Key card series switches (ESU) - PS-KT-XX-XX
PS-KT-XX-XX Key Tag Series of ESUs are designed to save power in hotel rooms by intelligently managing unwanted loads. They either switch OFF or regulate these loads when the guest is not present, without compromising comfort or convenience. These energy saving gadgets (ESU) with a switching capacity of 20 amperes remain ON for another 30 secs more when the guest leaves the room. A suitable model that varies from basic functionality, color could be selected by referring to our specific catalogue.
Liquid Level Controller - A-LLC-01
ALLC-01 is an electronic Liquid Level Controller (LLC) designed to automatically control all types of motor pumps for maintaining the desired water level in overhead tanks. The controller switches the pump ON/OFF by monitoring both the overhead tank and sump tank levels. In other words, it ensures that the pump operates only when there is sufficient water in the sump and the overhead tank requires filling, and it stops the pump when the tank reaches the high level. The system is also equipped with protection features against airlock and dry running, automatically shutting down the pump in such cases to prevent damage. Our catalogue will help you identify the most appropriate model for your application.
Precision Air Conditioning Controller with BMS connectivity using modulating valves - A9-G 343-01-02
The A9-G 343-01-02 Precision Air Conditioning Electronic Controller controls temperature and humidity using chilled water through a three-way modulation valve operated by a built-in PID algorithm, together with three-phase heaters and humidifiers, while the master controller ensures precision air conditioning with 100% redundancy by operating two independent intelligent slave controllers over an RS-485 network; it also provides dedicated LAN ports for integration
with in-house BMS using CAT6 cable or fibre optic cable, a four-line LCD screen with LED indicators and operating keys for parameter display and settings, interlock inputs for smoke, fire, fire damper, evaporator fan, SPP and power-good signals, as well as data logging of temperature, humidity and errors for up to three months with RTC time stamping at configurable intervals; the PID loop offers 0–10 V, 4–20 mA or dual relay outputs (for forward and backward motor operation) compatible with most vendor-supplied modulating valves, while BMS connectivity enables remote monitoring and control, and the slave controllers can operate independently, simultaneously or at pre-defined intervals, with further details and configuration options available in the accompanying write-up and user manual.
Precision Timer - PS-OT-X-XX-X-X-XXX
The models PS-OT-X-20-X-X-XXX are precision timers designed for energy saving in air conditioning and refrigeration applications. These timers can switch loads up to 20 Amps for both single- and three-phase systems. They operate based on a real-time clock (RTC), supporting up to 25 cycles per day, ensuring energy savings and reduced operational costs without compromising comfort. The model PS-OT-X-20-S-A-XXW, PS-OT-X-XX-S-A-XXP, PS-OT-T-20-S-B-XXW is suitable for operating direct-cool refrigerators and domestic air conditioners (up to 2-ton load) by configuring switching operations. The PS-OT-T-XX-B-MGW model is designed to switch ON/OFF three-phase PAC loads as per the scheduled timings. For more details and application references, please refer to our catalogue. More details and application could be found out from our catalogue.
Room Control Systems (RCS) - PS-PSSC-XX
Presevidesigns, develops, and manufactures a wide range of home automation products. These systems are widely used in star hotels guest rooms, resorts, and premium residences. Aesthetically designed, they ensure safe low-voltage operation, provide comfort and convenience, and deliver significant energy and operational cost savings. We offer both standard and customized models to suit customer preferences. The appropriate model can be selected by browsing our catalogue or by consulting us directly
Shelter Guard - PS-BX-02-Series
The PS-BX-02 series Shelter Guard controllers are field-proven units designed to manage two air conditioner loads with 24/7 operation with built in reliability like EMC/EMI compliant, 90–265 Volts operation. It features a timer function (1–12 hours) for alternating operation, thermostatic control within 16–30°C, options for simultaneous or single-unit operation, alarm generation through potential-free relays in PS-BT-02 models (AC failure) and additional high-temperature alarms in PS-BU-02 models (30–40°C) with battery backup for uninterrupted operation. It finds application in mobile switching centres, server rooms, FOC repeater stations, ATMs, and security shelters, with models available for both single-phase and three-phase systems, as detailed in the product brochure.
Temperature and humidity Indicator - A9-G331-SM
The A9-G331-SM is a reliable indicator that continuously displays temperature and humidity on a four-digit display. It uses a compact and precisely calibrated A9-SHT-SM sensor, which measures both parameters at the same location and can be placed up to 1000 meters away from the display. Although a provision for parameter offset adjustment is included, its use is generally not recommended. The unit can be integrated into a BMS system through its RS-485 or LAN port. It generates alarms whenever the measured values exceed the configured minimum or maximum operating limits. Designed for 24/7 operation, the indicator works on a wide power supply range of 80 to 260V AC, fully compliant with IEC standards and EMC/EMI requirements. In the event of a utility failure, the built-in backup ensures continued operation for up to three hours, making this a field-proven solution for dependable environmental monitoring. More technical details could be obtained by referring to the particular product brochure.
Temperature, Humidity & Co2 controller - PS–BX-XXX-XX
We manufacture two types of controller models: the PS–BX-XXX-2X series designed for controlling temperature and humidity, and another model the PS–BX-XXX-3X series of electronic controllers monitors and regulates temperature in the range of 16°C to 30°C, humidity from 10% to 99% RH, and CO? levels from 500 to 5000 ppm.
It is equipped with a carefully calibrated precision sensor module and is capable of measuring physical parameter values from long distances—up to 1000 meters—enabling effective remote monitoring and controlling of the conditioned area. It can operate either with chilled water systems or by the direct expansion method. This controller PS-BX-XXX –XX finds application in air-conditioning in conference rooms, plant growth chambers, controlled environment farming (CEA), Playhouses, vertical farming and similar application. A9-G 343-01-02 is a precision air conditioning controller designed with 100% redundancy with two independent slaves in RS 485 network, chilled water modulating valves, heaters, humidifiers, BMS connectivity etc., making it ideal for critical applications such as server rooms, fuel storage spaces, and similar environments. All these controllers could be operated from 90 to 270 volts power supply and are developed using mixed-signal processing technology, with careful consideration of EMC/EMI compliance, reliability factors, safety & convenience, and energy efficiency. In addition, we manufacture complete control panels that integrate the electronic controller, protection devices, properly rated contactors, and electrical terminations in an enclosure. As a result, our controllers deliver superior performance along with significant operational cost savings. For model-specific details, please consult the product selection page and choose the controller that best suits your application.
Welding Energy Saver - PS-WES-XX
PS-WES-XX is a microcontroller-based ON/OFF controller designed to optimize the energy usage of welding machines. By intelligently managing power, it reduces energy consumption and operating costs without compromising welding quality. The welding transformer—the machine’s main power component—draws significant magnetizing current at a low power factor during idle periods. PS-WES-XX prevents this unnecessary energy loss by shutting down the transformer through a three-phase contactor installed inside the machine. The shutdown is triggered after a user-selectable idle time ranging from 0 to 59 seconds, and the machine switches ON automatically the moment the welding electrode touches the workpiece, ensuring both time savings and convenience for the welder. The model PS-WES-01 is meant for the machine with single welding electrode port whereas the model PS-WES-02 is for two welding electrode ports. More details are given in the brochure for the same.