BECSys3
Entry-level BECS controller with a two-line display, pH/ORP control, optional free-chlorine sensor, and an optional Communications module for BECSys Live.
Available through FreyTech
BECS Technology · Automated Controls
BECSys5
Continuous chemistry control with alarms, records, and remote visibility for institutional pools
← Back to all productsAvailable through FreyTechFacts verified against manufacturer literature 2026-09-15.
Looking for the decision guide? The BECSys5 flagship page covers problems solved, scenarios, process, and FAQs in depth. This page is the specification and fit reference.
Overview
BECSys5 is BECS Technology's expandable controller for commercial pools. Out of the box it measures pH, ORP, and temperature through a machined flow cell with a flow switch, drives up to four chemical feeds on solid-state relays, logs a year of one-minute readings, and sends email and text alarms over its built-in Gigabit Ethernet connection.
Optional sensors and modules extend it to true free-chlorine PPM control, total alkalinity, conductivity, turbidity, flow, pressures, tank levels, and chemical inventory, plus control of VFD recirculation pumps, UV, ozone, heaters, and makeup water and interfaces to building-management systems. Remote access through BECSys Live is included at no additional fee.
Is this a fit for your facility?
Usually a fit when
- Institutional pools that need alarms, records, and remote visibility
- Facilities replacing a discontinued or unsupported controller
- Multi-pool campuses standardizing on one platform
- Renovations integrating pumps, VFDs, UV, or heaters
Look elsewhere when
- A single small pool that only needs pH/ORP with no communications (see BECSys3)
- Mechanical rooms that need automatic filter backwash from the controller (see BECSys7)
Ideal facilities and conditions: Competition and lap pools; Therapy pools and spas; Municipal indoor and outdoor pools; Multi-pool YMCAs and campuses.
Problems it addresses
Key capabilities and benefits
Capabilities
- pH, ORP, and temperature sensors, flow switch, and machined flow cell standard
- Four solid-state relays, expandable to 19 with SRX/MRX modules
- Gigabit Ethernet; email and text alarm notification
- One year of 1-minute readings and one year of events in non-volatile memory
- No-flow feed lockout, failsafe overfeed timers to 18 hours, pH-alarm sanitizer lockout, emergency off
- Three-level access codes
- NEMA 4X (IP66) enclosure; 115/230 VAC
Operational and buyer benefits
- Fewer blind spots: dashboards, alarms, and trends reach the people responsible
- More consistent water through continuous control rather than periodic correction
- Records that can be reviewed with the health department alongside the required daily log
- Continuity through staff turnover: documented setpoints and logged changes
- One platform that grows as the mechanical room is modernized
Available models and configurations
BECSys5 standardpH/ORP/temperature control with Ethernet, alarms, logging, and BECSys Live.
With free/total chlorine PPMDirect PPM monitoring and control with optional sensors; combined-chlorine tracking.
With BECSys Alkalinity MeterTotal alkalinity monitoring and control.
With flow/pressure/VFD optionSystem flow, pressures, TDH monitoring and patented VFD recirculation-pump control via 4–20 mA output.
With BMS interfaceModbus TCP/IP, BACnet, Metasys N2, or LonWorks.
Technical specifications
| Standard measurements | pH, ORP, temperature; flow switchSource: TDS-4262 |
|---|---|
| Optional measurements | Free/total/combined chlorine (PPM), total alkalinity, conductivity/TDS, turbidity, system flow, pressures, vacuum, TDH, tank levels, chemical inventorySource: TDS-4262 |
| Outputs | 4 solid-state relays standard; up to 19 with expansion modules; optional 4–20 mA outputSource: TDS-4262 |
| Communications | Gigabit Ethernet standard; optional Wi-Fi; optional Modbus TCP/IP, BACnet, Metasys N2, LonWorksSource: TDS-4262 |
| Remote access | BECSys Live (no fee), BECSys for Windows, BECSys Now! appSource: SLS-4333-H |
| Data logging | 365 days of 1-minute readings; 365 days of events; NAND flash, no batterySource: TDS-4262 |
| Safety | No-flow lockout with flow-restored delay; failsafe overfeed timers (1-minute steps to 18 h); pH-alarm sanitizer lockout; emergency offSource: TDS-4262 |
| Enclosure / power | Glass-reinforced polycarbonate, NEMA 4X (IP66); 115/230 VAC 50/60 HzSource: TDS-4262 |
| Listings | NSF Certified and Listed to NSF/ANSI 50; ETL Listed to ANSI/UL 61010-1Source: TDS-4262 |
| Warranty (manufacturer) | 5 years electronics; 2 years pH/ORP/temperature sensors; 1 year optional sensors and flow cellSource: SLS-4333-H / TDS-4262 |
Specifications are summarized from manufacturer literature and depend on configuration. Confirm current values with FreyTech before design.
Installation requirements and retrofit considerations
Prerequisites
- A sound sample loop: adequate sample flow, strainer, and a location for the flow cell
- Feed equipment with controllable outputs (solenoids, metering pumps, feeder valves)
- 115 or 230 VAC circuit
- Network drop or Wi-Fi option for alarms and BECSys Live
- Chemical storage and interlock wiring reviewed for New York requirements
Retrofit and replacement notes
- Most replacements reuse the existing sample line and feed equipment with a new flow cell and probes
- Typical cutover is one to two days on site plus stabilization and training
- Adding sensors, relays, VFD, or BMS interfaces extends scope and may involve the engineer and permit-issuing official (6-1.8)
Integration with other equipment
- Pulsar Precision and Precision 30 feedersFeeder solenoid driven by the controller's chlorine-demand output.Manufacturer-documented
- Metering pumps and CO2 pH controlStandard relay outputs; CO2 systems per BECS literature.Manufacturer-documented
- SpinTouch and Lumiso digital test kitsAutomatic upload of readings.Manufacturer-documented
- VFDs, UV, ozone, heaters, autofillConfiguration-dependent optional control functions.Manufacturer-documented
- Building management systemsOptional Modbus TCP/IP, BACnet, Metasys N2, LonWorks interfaces.Manufacturer-documented
- BECSys ChemLockIndependent UL 508A chemical-feed interlock.Manufacturer-documented
Often specified with
- Pulsar PrecisionPatented high-capacity erosion feeder for calcium hypochlorite briquettes; manufacturer-rated for 500,000 to 1,000,000+ gallon pools; up to 189 lb/day available chlorine.Documented pairing
- Pulsar Precision 30Flow-based erosion feeder with a 30 lb hopper; 2–36 lb/day available chlorine; manufacturer-recommended pool size 10,000–300,000 gallons.Documented pairing
- BECSys ChemLockUL 508A-approved interlock panel that locks out chemical feeds independently of the controller when circulation stops.Documented pairing
- Taylor Technologies Test KitsCommercial 2000-series DPD and FAS-DPD test kits and reagents from Taylor Technologies (Fluidra); 18 Taylor kits are certified to NSF/ANSI/CAN 50 per the manufacturer.Commonly considered together
“Commonly considered together” means the pairing is typical in practice; technical compatibility is confirmed for each project.
FreyTech's role: design, installation, commissioning, training, support
Project services
- Assessment of the sample loop, feed equipment, network, and storage
- Configuration and submittals against your point list
- Installation by FreyTech technicians
- Commissioning: calibration against manual tests, setpoints, alarm limits, failsafe and no-flow tests, alarm delivery test, settings record
- Operator and supervisor training with written procedures
Ongoing service and support
- Phone support and remote diagnostics through BECSys Live
- Preventive maintenance visits for calibration and probe replacement
- BECS warranty coordination
- Genuine replacement sensors and flow-cell parts
Brochures, manuals, warranties and specifications
- BrochureBECSys5 brochure (SLS-4333-H) (opens manufacturer site)PDF · Manufacturer-hosted
- BrochureBECSys Live brochure (SLS-6105-A) (opens manufacturer site)PDF · Manufacturer-hosted
- Specification sheetBECSys5 Technical Data Sheet (TDS-4262)PDF · Available on request · Official copy available to FreyTech through the BECS distributor portal; provided on request pending permission to host.
- Owner's manualBECSys5 Operator's ManualPDF · Available on request · Provided to customers with the system; not publicly hosted by BECS.
- Installation manualBECSys5 Installation & Technical ManualPDF · Available on request · Provided to installers and engineers on request.
- Product pageBECS product page (opens manufacturer site)Web · Manufacturer-hosted
BECSys5: frequently asked questions
Do we need a separate controller for each pool?
Yes. One BECSys5 controls one body of water. BECSys Live shows all of them together.
Does it replace manual testing in New York?
No. Manual DPD tests and the State daily operation record remain required (10 NYCRR 6-1.11, 6-1.21). The controller's logs supplement them.
What does remote access cost?
BECS states BECSys Live is included with no additional fees or subscription.
Can it control free chlorine directly?
Yes, with the optional PPM sensor. Many sites control on ORP and monitor PPM; we recommend based on your water and staff.
Related products
BECSys7
BECS's top controller: everything in BECSys5 plus automatic backwash for up to 16 filters, five mechanical relays, and UV/heater interfaces.
Available through FreyTech
BECSys ChemLock
UL 508A-approved interlock panel that locks out chemical feeds independently of the controller when circulation stops.
Available through FreyTech
BECS Replacement Sensors and Flow-Cell Parts
Manufacturer sensors with a two-year warranty on pH/ORP/temperature, plus flow-cell components, supplied and installed by FreyTech.
Available through FreyTech
Related solutions: Add alarms and remote visibility · Replace an obsolete controller · Stabilize water chemistry
Explore compatible chemical-delivery approaches
- Measure
BECSys5
- Control
BECSys5
- Feed
Pulsar Precision
- Monitor
BECSys Live
- Support
FreyTech
Next step
Is BECSys5 right for your facility?
Send us your pool volumes, current equipment, and what is not working. A specialist will review fit honestly and recommend next steps.
Serving commercial aquatic facilities across New York State.