| Transmitter model | SS20-TL40 | 
                                            
                            | Receiver model | SS20-TR40-CH | 
                                            
                            | Detection method | Through beam | 
                                            
                            | Detecting distance | 7m or less | 
                                            
                            | Detecting object | Opaque object of dia. 32 mm or more | 
                                            
                            | No. of optical axes | 40 | 
                                            
                            | Detecting width | 780mm | 
                                            
                            | Beam interval | 20mm | 
                                            
                            | Power supply | 24V DC ±10% / Ripple 10% or less | 
                                            
                            | Current consumption | 150mA | 
                                            
                            | Output mode | Serial output | 
                                            
                            | Response time | 8ms or less (only sensor) | 
                                            
                            | Light source | Infrared LED (wave length:950mm) | 
                                            
                            | Light-sensitive element | Photo transistor | 
                                            
                            | Indicator | Transmitter: M/S indicator (red LED), Power indicator (green LED) Receiver: Light reception stability indicator (yellow LED), Power indicator (green LED)
 | 
                                            
                            | Auxiliary functions | Anti Interference feature provided for adjacent installation | 
                                            
                            | Switch | Transmitter: M/S mode switch | 
                                            
                            | Material | Case: aluminum / Front cover, lens: Acrylic | 
                                            
                            | Connection | Attacbed cable with connector 0.2m, 0.5mm2 x 4 cores dia.6.8 mm | 
                                            
                            | Weight | 650g or less |