SAT software gets confused with CMMS constantly. Both deal with equipment, work orders, and technicians. But they serve fundamentally different operations—and buying the wrong one is an expensive mistake.
CMMS is for managing your own assets in your own facilities. SAT software—field service management software—is for managing technicians who go to customer locations to install, repair, and maintain equipment that belongs to your clients.
If you run an elevator maintenance company, an HVAC service business, or an industrial refrigeration firm, you need SAT software. Your technicians are mobile, your customers' equipment is scattered across dozens of locations, and your business model depends on response time and contract compliance—not internal work order queues.
What SAT Stands For in the Spanish Business Context
In Spain and Latin America, SAT (Servicio de Asistencia Técnica) refers specifically to technical assistance service operations. It's a well-established business model: companies that hold service contracts with customers to maintain and repair industrial or commercial equipment.
A SAT operation might handle 50 elevator maintenance contracts across a city, 200 refrigeration service agreements with supermarkets, or 500 industrial machinery contracts with manufacturing plants. The defining characteristic is that technicians travel to customer sites—they do not work in a central facility.
SAT software is designed around this reality: mobile-first technician apps, customer equipment databases, contract management, SLA tracking, and invoicing per intervention. These are features that a standard CMMS does not prioritize because it assumes a fixed-facility operation.
Core Features of SAT Software
Service contract management is the foundation. SAT software tracks which customers have which service agreements, what equipment is covered, what response time is guaranteed, and what maintenance schedule is included. This is non-negotiable for any company selling maintenance contracts.
Dispatch and scheduling comes next. A good SAT platform shows you where your technicians are, what jobs they have scheduled, and suggests optimal routing when a new urgent call comes in. Platforms like FieldCircle and ServiceMax have mature dispatch views that show technician availability and location simultaneously.
Mobile field apps for technicians are where SAT software earns its cost. Technicians need to see the equipment history before arriving on-site, log parts used during the repair, capture customer signatures for job completion, and generate the intervention report—all from a phone, often in a basement plant room with marginal connectivity.
SLA and contract compliance tracking is often what separates SAT software from generic field service tools. If you have committed to a 4-hour response time for critical equipment, your software needs to track that automatically and alert dispatch when an SLA is at risk of breach.
SAT Software vs. CMMS: The Key Differences
The direction of service is the clearest distinction. CMMS manages maintenance on equipment you own. SAT software manages maintenance on equipment your customers own. This changes almost everything about how the software is structured.
Customer management in SAT is extensive—contact history, equipment registers per customer, contract terms per customer, billing per intervention. CMMS has no equivalent because the 'customer' is internal departments, not external clients.
Parts management works differently too. In CMMS, parts come from a central warehouse to your own equipment. In SAT, technicians often carry a van stock of common parts, order customer-specific parts to a job site, or draw from a branch workshop. SAT software needs to track all three flows.
Invoicing is built into SAT software because every intervention may generate a billable event. CMMS rarely includes invoicing because maintenance cost is an internal charge, not a customer invoice.
Industries Where SAT Software Is Essential
Elevator and lift maintenance is the classic SAT use case. Companies like Otis, Schindler, and thousands of independent lift maintenance firms manage hundreds of service contracts per technician. Response time, safety inspection records, and regulatory compliance documentation are core requirements that SAT software handles directly.
HVAC and refrigeration service is another high-volume SAT market. Maintenance contracts on commercial air conditioning systems, industrial chillers, and commercial refrigeration require seasonal PM visits, emergency call response, and parts tracking across a large installed base of customer equipment.
Industrial equipment service—CNC machines, compressors, generators, industrial washing systems—involves complex equipment with long maintenance histories and expensive spare parts. Technician expertise matching (which technician has the certification for this machine type) is a feature ServiceMax handles particularly well.
Fire protection and security system maintenance operates under strict regulatory requirements with mandatory inspection intervals. SAT software with compliance tracking and automatic certificate generation is nearly mandatory in this sector.
Choosing Between SAT Software Platforms
FieldCircle works well for mid-market SAT operations in the 10-100 technician range. Its interface is clean, the mobile app handles offline mode well, and the contract management module covers most Spanish SAT business models without heavy customization.
ServiceMax (now part of Salesforce) is the enterprise option. If you manage thousands of service contracts across multiple countries with complex spare parts logistics and technician certification requirements, ServiceMax has the depth. The tradeoff is implementation complexity and cost—ServiceMax projects typically run six-plus months.
For smaller SAT operations, platforms like Synchroteam or FieldPulse offer a lower entry point. They lack the contract management depth of FieldCircle or ServiceMax but work well for companies with simpler service agreements and smaller technician teams.
Whatever platform you choose, test three things before committing: the mobile app on a real Android device in offline mode, the contract management workflow for your most complex service agreement type, and how the system generates the intervention report that your customers sign at the end of each visit.