Based on this product's specifications, here are some alternatives and similar models
Uninterruptible Power Supply PowerWalker VFD 800 APFC FR Standby 0.8 kVA / 420 W, 6 Type E AC outlets, 7 Ah battery
Summary description:
PowerWalker VFD 800 APFC FR is a standby (offline) UPS providing 0.8 kVA (420 W) output with six Type E AC outlets. It features a 12 V / 7 Ah battery for short-term backup (typical full-load runtime ~1.5 min) and automatic power factor correction (APFC). Compact black unit (170×335×92 mm, 3.6 kg) suited for protecting PCs, network devices and small office equipment during power interruptions.