| Description | Wireless Data logger with Voltage/Temp. input module, 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 | GL840 DIN Rail Mounting Kit | Data logger with GS-LXUV Illuminance/UV sensor, 4.9MB on-board memory, micro-SD memory slot, micro-B USB PC interface, LCD display | Shunt Resistor (1pc/pack) (soldered on lugs for terminal block use). 250 ohm shunt resistor | Battery pack for GL240, GL820, GL840 | 
| Additional information | 
			
			| 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 | 
			2 lbs | 
		 
			
			| Dimensions | 
			6 × 8 × 4 in | 
		 
	 
 | 
			
			| Weight | 
			0.2 lbs | 
		 
			
			| Dimensions | 
			6 × 8 × 4 in | 
		 
	 
 | 
			
			| Weight | 
			1 lbs | 
		 
			
			| Dimensions | 
			6 × 8 × 4 in | 
		 
	 
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