| Thông số kỹ thuật | 
		
			|  | 
					
						
							| Fluke 411D | 0.1 m to 30 m |  
							|  | (0.33 ft to 100 ft) |  
							| Fluke 416D | 0.05 m to 60 m |  
							|  | (0.16 ft to 200 ft) |  
							| Fluke 421D | 0.05 m to 100 m |  
							|  | (0.16 ft to 330 ft) |  | 
		
			| Độ chính xác | 
					
						
							| Fluke 411D* | ± 3 mm (0.118 in) |  
							| Fluke 416D** | ± 1.5 mm (± 0.059 in) |  
							| Fluke 421D | ± 1.5 mm (± 0.059 in) |  | 
		
			| Lớp Laser | 
					
						
							| Fluke 411D | Class II |  
							| Fluke 416D | Class II |  
							| Fluke 421D | Class II |  | 
		
			| Loại Laser | 
					
						
							| Fluke 411D | 635 nm, < 1 mW |  
							| Fluke 416D | 635 nm, < 1 mW |  
							| Fluke 421D | 635 nm, < 1 mW |  | 
		
			| Tự động ngắt nguồn | 
					
						
							| Fluke 411D | after 180 seconds |  
							| Fluke 416D | after 180 seconds |  
							| Fluke 421D | after 180 seconds |  | 
		
			| Đo liên tục | 
					
						
							| Fluke 411D | Yes |  
							| Fluke 416D | Yes |  
							| Fluke 421D | Yes |  | 
		
			| Cộng/trừ | 
					
						
							| Fluke 411D | Yes |  
							| Fluke 416D | Yes |  
							| Fluke 421D | Yes |  | 
		
			| Tuổi thọ pin | 
					
						
							| Fluke 411D | up to 3,000 measurements |  
							| Fluke 416D | up to 5,000 measurements |  
							| Fluke 421D | up to 5,000 measurements |  | 
		
			| Chiếu sáng LCD | 
					
						
							| Fluke 411D | No |  
							| Fluke 416D | Yes |  
							| Fluke 421D | Yes |  | 
		
			| Data locations | 
					
						
							| Fluke 411D | No |  
							| Fluke 416D | 10 |  
							| Fluke 421D | 20 |  | 
		
			| Min/Max | 
					
						
							| Fluke 411D | No |  
							| Fluke 416D | Yes |  
							| Fluke 421D | Yes |  | 
		
			| Hồi tiếp âm | 
					
						
							| Fluke 411D | No |  
							| Fluke 416D | Yes |  
							| Fluke 421D | Yes |  | 
		
			| Pythagoras (Indirect measurement) | 
					
						
							| Fluke 411D | Simple |  
							| Fluke 416D | Full |  
							| Fluke 421D | Full |  | 
		
			| Bảo vệ | 
					
						
							| Fluke 411D | IP40 |  
							| Fluke 416D | IP54 |  
							| Fluke 421D | IP54 |  | 
		
			| Kích thước | 
					
						
							| Fluke 411D | 123 mm x 50 mm x 26 mm |  
							|  | (4.84 in x 1.97 in x 1.02 in) |  
							| Fluke 416D | 135 mm x 46 mm x 31 mm |  
							|  | (5.31 in x 1.81 in x 1.22 in) |  
							| Fluke 421D | 127 mm x 52 mm x 29 mm |  
							|  | (5.00 in x 2.06 in x 1.13 in) |  | 
		
			| Khối lượng | 
					
						
							| Fluke 411D | 150 g (5.29 oz) |  
							| Fluke 416D | 110 g (3.88 oz) |  
							| Fluke 421D | 125 g (4.40 oz) |  | 
		
			| Tầm nhiệt độ | 
					
						
							| Fluke 411D | Storage: -25 °C to 70 °C (-13 °F to 158 °F) |  
							|  | Operation: 0 °C to 40 °C (32 °F to 104 °F) |  
							| Fluke 416D | Storage: -25 °C to 70 °C (-13 °F to 158 °F) |  
							|  | Operation: 0 °C to 40 °C (32 °F to 104 °F) |  
							| 
 Fluke 421D
 | 
 -25 °C to 70 °C (-13 °F to 158 °F)
 |  
							|  | 0 °C to 40 °C (32 °F to 104 °F) |  | 
		
			| Hoạt động ở độ cao (ISO 9022)
 | 
					
						
							| Fluke 411D | up to 3500 m |  
							| Fluke 416D | up to 3500 m |  
							| Fluke 421D | up to 3500 m |  | 
		
			| Độ ẩm lưu kho (at 35 °C)
 | 
					
						
							| Fluke 411D | maximum 85 % for 24 h |  
							| Fluke 416D | maximum 85 % for 24 h |  
							| Fluke 421D | maximum 85 % for 24 h |  | 
		
			| Pin | 
					
						
							| Fluke 411D | AAA (2) |  
							| Fluke 416D | AAA (2) |  
							| Fluke 421D | AAA (2) |  |