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												Allows the data logger to control dc devices that have a moderate current load, such as solenoids, solenoid valves, dc motors, stepper motors, lights, horns, heaters, and fans. 
											
										
									
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												8 
											
										
									
								 | 
							
								
									
										
											
												-40° to +70°C 
											
										
									
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												12 Vdc 
											
										
									
								 | 
							
						
					
						
							
								
								
									 
								
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												Allows the data logger to control dc devices that have a relatively high-powered load, such as solenoids, solenoid valves, dc motors, stepper motors, lights, horns, heaters, and fans. 
											
										
									
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												16 
											
										
									
								 | 
							
								
									
										
											
												-40° to +70°C 
											
										
									
								 | 
							
								
									
										
											
												12 Vdc 
											
										
									
								 | 
							
						
					
						
							
								
								
									 
								
							 | 
							
								
									
										
											
												Expands the digital input and/or output capability of a data logger. 
											
										
									
								 | 
							
								
									
										
											
												16 
											
										
									
								 | 
							
								
									
										
											
												-40° to +70°C 
											
										
									
								 | 
							
								
									
										
											
												12 Vdc  (nominal 9 to 18 V)
											
										
									
								 | 
							
						
					
						
							
								
								
									 
								
							 | 
							
								
									
										
											
												Increases the number of continuous analog output (CAO) ports available to a data logger. CAOs are used for proportional control or driving strip charts.
											
										
									
								 | 
							
								
									
										
											
												4 
											
										
									
								 | 
							
								
									
										
											
												-40° to +60°C 
											
										
									
								 | 
							
								
									
										
											
												12 Vdc nominal  (9.6 to 16 Vdc)
											
										
									
								 | 
							
						
					
						
							
								
								
									 
								
							 | 
							
								
									
										
											
												Enables a data logger to determine whether 12 Vdc power is passed onto an external device. 
											
										
									
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										—
									
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										—
									
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										—
									
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							 | 
							
								
									
										
											
												Allows a data logger to control one or two dc devices. 
											
										
									
								 | 
							
								
									
										
											
												1 
											
										
									
								 | 
							
								
									
										
											
												-40° to +100°C 
											
										
									
								 | 
							
								
									
										
											
												1 to 100 Vdc 
											
										
									
								 |