The True Cost of Security Guards at Barrier Gates
When people think about security guard costs, they usually only consider the salary. But the real cost is much more than that. Let's see how much it actually costs to have security guards manning a single barrier gate 24 hours a day, every day of the year.
Cost per Gate (24 hours = 3 shifts required)
| Item | Per Month (THB) | Per Year (THB) |
|---|---|---|
| Salary for 3 guards (12,000 each) | 36,000 | 432,000 |
| Social security (5% employer contribution) | 1,800 | 21,600 |
| Overtime / Holiday pay (estimated) | 4,500 | 54,000 |
| Uniforms / Equipment | 500 | 6,000 |
| Recruitment / Training (average) | 1,500 | 18,000 |
| Substitute guards (leave/holidays) | 3,000 | 36,000 |
| Total | 47,300 | 567,600 |
The figures above are for direct hiring. If you hire through a security company, costs increase by another 20-40% due to management fees, bringing the actual cost to 650,000-790,000 THB per year per gate.
AI License Plate Recognition System Costs
| Item | Cost (THB) | Type |
|---|---|---|
| AI LPR Camera + Software (1 entry lane + 1 exit lane) | 180,000-300,000 | One-time |
| 2 automatic barrier gates | 50,000-120,000 | One-time |
| Installation and cabling | 30,000-50,000 | One-time |
| Annual system maintenance | 15,000-30,000 | Annual |
| Total Year 1 (mid-range) | ~380,000 | - |
| Year 2 onward | ~25,000 | Annual |
5-Year Cumulative Cost Comparison
Here is a 5-year cumulative cost comparison (assuming direct hiring, not through a security company):
| Year | Guards Cumulative (THB) | AI LPR Cumulative (THB) | Savings (THB) |
|---|---|---|---|
| 1 | 567,600 | 380,000 | +187,600 |
| 2 | 1,135,200 | 405,000 | +730,200 |
| 3 | 1,702,800 | 430,000 | +1,272,800 |
| 4 | 2,270,400 | 455,000 | +1,815,400 |
| 5 | 2,838,000 | 480,000 | +2,358,000 |
Break-even Point: How Many Months to ROI?
From the figures above, the AI LPR system pays for itself from the very first year, as the total first-year investment (380,000 THB) is still less than the annual guard cost (567,600 THB). However, if you already have guards and want to "supplement" with AI LPR to reduce the number of guards from 3 to 1, the break-even point is approximately 12-15 months.
Simple formula: Break-even = System investment / (Previous guard cost - New guard cost - Monthly system maintenance)
Example: Reducing from 3 guards to 1 = savings of 24,000 THB per month (2 guards x 12,000). Subtract system maintenance of ~2,000 per month = net savings of 22,000 THB/month. System investment of 300,000 / 22,000 = break-even in approximately 14 months.
Case Study: Housing Estate with 200 Units
A housing estate in Nonthaburi province with 1 entry/exit point (2 lanes) previously used 3-shift security guards from an outsourcing company at 55,000 THB per month. After installing an AI LPR system, they reduced to just 1 daytime guard (for receiving packages and greeting visitors).
- Guard costs reduced from 55,000 to 15,000 THB/month
- Monthly savings of 40,000 THB = 480,000 THB per year
- Total AI LPR system investment: 320,000 THB
- Break-even within 8 months
- Higher resident satisfaction as there is no need to stop and tap a card
Additional Considerations
The figures above do not include the "hidden costs" of using security guards, such as the risk of gates being opened for unauthorized vehicles, unexpected absences, or service attitude issues. In contrast, the AI LPR system operates 24 hours a day, never calls in sick, never takes vacation, and automatically logs every vehicle.
However, an AI LPR system does not mean you need no human oversight at all. You still need staff to handle special cases, such as vehicles with unreadable plates or emergency situations. But you do not need someone stationed at the gate around the clock.
Conclusion
For housing estates already paying for security guards at barrier gates, investing in an AI LPR system can reduce long-term costs by 50-70%, with a break-even point of 8-15 months. The more entry/exit points a project has, the more dramatic the savings. Combined with improved security quality, it is a highly sensible investment.