| Description | Cable: 4 x Logic inputs and 4 x alarm outputs, 2 meters. For use with the Graphtec GL series data loggers for input of pulse or logic signals and for alarm outputs. | Wireless Data logger with Carbon dioxide sensor, 4.9MB on-board memory, micro-SD memory slot, micro-B USB PC interface, LCD display | Wireless Data logger with Thermistor input terminal (Thermistor (max. 120 C) of 4 ch), WLAN model, 4.9MB on-board memory, micro-SD memory slot, USB PC interface, LCD display | Wireless Data logger with Acceleration/Temp. sensor, 4.9MB on-board memory, micro-SD memory slot, micro-B USB PC interface, LCD display | GL840 Extension terminal base | Data logger with GS-CO2 Carbon dioxide sensor, 4.9MB on-board memory, micro-SD memory slot, micro-B USB PC interface, LCD display | 
| Additional information | 
			
			| Weight | 
			1 lbs | 
		 
			
			| Dimensions | 
			6 × 8 × 4 in | 
		 
	 
 | 
			
			| Weight | 
			2 lbs | 
		 
			
			| Dimensions | 
			6 × 8 × 4 in | 
		 
	 
 | 
			
			| Weight | 
			2 lbs | 
		 
			
			| Dimensions | 
			6 × 8 × 4 in | 
		 
	 
 | 
			
			| Weight | 
			2 lbs | 
		 
			
			| Dimensions | 
			6 × 8 × 4 in | 
		 
	 
 | 
			
			| Weight | 
			1 lbs | 
		 
			
			| Dimensions | 
			6 × 8 × 4 in | 
		 
	 
 | 
			
			| Weight | 
			1 lbs | 
		 
			
			| Dimensions | 
			6 × 8 × 4 in | 
		 
	 
 |