Amazon one-day sale: Up to 30% off TP-Link networking devices

TP-Link Archer AC1900 Dual-Band Smart Wi-Fi Router for $69.99
This dual-band router delivers 600 Mbps on 2.4GHz and 1,300 Mbps on 5GHz. It purportedly provides up to 3,000 square-feet of coverage and can connect to up to 50 devices at once. It features a 1GHz processor and comes with the TP-Link Tether app for either Android or iOS. Amazon is offering it for $40 off list price and about $10 less than you'll find it elsewhere.

TP-Link Deco Whole Home Mesh Wi-Fi System for $139.99
This system uses two units to work seamlessly together to cover up to 3,800 square feet and connect up to 100 devices at once. It delivers 400 Mbps on 2.4GHz and 867 Mbps on 5GHz. Amazon is selling it for $40 off list price, an especially good price when you consider one unit usually sells for $100.

TP-Link TC-7620 DOCSIS 3.0 Cable Modem for $44.99
If you've been renting a modem from your internet provider, you may want to save yourself some money in the long run by buying your own. Amazon offers this one for $45 off list price and about $14 less than what you'll find at other retailers. It features 16 downstream and 4 upstream channels that provide data rates up to 680 Mbps for download and 143 Mbps for upload. 

TP-Link AC750 Dual Band Wi-Fi Range Extender for $18.99
If your router isn't providing coverage for all of your living space, an extender is an easy way to fill in the gaps. This one is compatible with 802.11 b/g/n and 802.11ac Wi-Fi devices and can handle speeds up to 750 Mbps. Amazon is selling it for only $19. That's $11 off list price, which is what most stores charge.

TP-Link Archer CR500 DOCSIS 3.0 Wireless Wi-Fi Cable Modem Router for $99.99
If you need to upgrade your router, here's an opportunity to get your own modem at the same time. It's ISP-certified for Comcast, Spectrum, Suddenlink, Mediacom, and WOW, and will provide download speeds up to 680 Mbps. Amazon is selling it for only $100, which is $30 off list price and $10 less than what other stores charge.