2022.08.19Wire stopper for easy installation.【L-503/L-139N】

What is the difference between L-139N (conventional product) and L-503? What has changed? We will answer the question!
■Difference 1
The clamps and wires were packed separately, but the L-503 is already installed.

■Difference 2
Easy to install as the clamps and wires are already built in.
Can be installed faster than conventional products.

■Introduction products
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